ORGANIC  PHOSPHORUS COMPOUNDS

1.    Allyldiphenylphosphine,  95%   [2741-38-0]  C15H15P   FW   226.26         

                                 CH2=CHCH2P(C6H5)2

2.     Allyldiphenylphosphine  oxide,  97%   [4141-48-4]  C15H15OP   FW  242.26  

                                   CH2=CHCH2P(O)(C6H5)2 

3.     Allyltriphenylphosphonium  bromide,   99%  [1560-54-9] C21H20BrP   FW  383.27

                                    CH2=CHCH2P(C6H5)3 Br

4.     Acetonyltriphenylphosphonium  chloride,   98%  [1235-21-8] C21H20ClOP   FW  354.82

                                    CH3COCH2P(C6H5)3 Cl

5.            Allyl(triphenylphosphoranylidene)acetate,  97%  [104127-76-6] C23H21O2P   FW  360.40

                       (C6H5)3P=CHCOOCH2CH=CH2

6.     (Allyloxycarbonylmethyl)triphenylphosphonium iodide, 97%[206557-04-2] C23H22IO2P   FW  488.31

                       (C6H5)3PCH2COOCH2CH=CH2

7.   (2-Aminobenzyl)triphenylphosphonium bromide,  97%  [78133-84-3] C25H23BrNP   FW  448.35

                             H2NC6H4CH2P(C6H5)3 Br

8.     1,2-Bis(dichlorophosphino)ethane,   97%   [28240-69-9] C2H4Cl4P2   FW  231.81

                                       Cl2PCH2CH2PCl2

9.         Bis(dichlorophosphino)methane,  96%  [28240-68-8] CH2Cl4P2   FW  217.79

                                          Cl2PCH2PCl2

10.     Bis(2,2,2-trichloroethyl)phosphorochloridate,  98%  [17672-53-6]  C4H4Cl7O3P   FW  379.22

                                      (Cl3CCH2O)2P(O)Cl

11.     Bis(2-oxo-3-oxazolidinyl)phosphinic  chloride,  97%  [68641-49-6] C6H8ClN2O5P   FW  254.57


12.     tert-Butyl P,P-dimethylphosphonoacetate,   97%  [62327-21-3]  C8H17O5P   FW  224.19

                                  (CH3O)2P(O)CH2COOC(CH3)3

13.            Bis(dimethylamino)chlorophosphine,  97%  [685-83-6] C8H20ClN2P   FW  210.69

                                   [(C2H5)2N]2PCl

14.            tert-Butyl  diethylphosphonoacetate,  95%  [27784-76-5] C10H21O5P   FW  252.25

                                   (C2H5O)2P(O)CH2COOC(CH3)3

15.     Benzyl  diethylphosphite,   95%  [2768-31-2]  C11H17O3P   FW  228.23

                                        C6H5CH2OP(OC2H5)2

16.     Bis(2,4-dichlorophenyl)chlorophosphate,   95%  [14254-41-2] C12H6Cl5O3P   FW  406.42

                                        (Cl2C6H3O)2P(O)Cl

17.     Bis(4-nitrophenyl)phosphate,   99%  [645-15-8]  C12H9N2O8P   FW  340.18

                                      (O2NC6H4O)2P(O)OH

18.               Bis(4-methoxyphenyl)phosphinic  acid,  99%  [20434-05-3] C14H15O4P   FW  278.24

                                     (CH3OC6H4)2P(O)OH

19.     Bis(diethylamino)phenylphosphine,   97%   [1636-14-2]   C14H25N2P   FW  252.34

                                        [(C2H5)2N]PC6H5

20.     Bis(2-ethylhexyl)phosphite,   98%   [3658-48-8]  C16H35O3P   FW  306.43

                               [CH3(CH2)3CH(C2H5)CH2O]2P(O)H

21.     Bis(2-ethylhexyl) hydrogen phosphate,   97%   [298-07-7]  C16H35O4P   FW  322.43

                            [CH3(CH2)3CH(C2H5)CH2O]2P(O)OH

22.             (Bromomethyl)triphenylphosphonium  bromide,  98% [1034-49-7] C19H17Br2P   FW  436.14

                                   BrCH2P(C6H5)3Br

 23.     Benzyldiphenylphosphine,   97%   [7650-91-1]  C19H17P   FW  276.32

                                              C6H5CH2P(C6H5)2

24.      Bis(2-methoxyphenyl)phenylphosphine,  95%  [36802-41-2] C20H19O2P   FW  322.34

                                            (CH3OC6H4)2PC6H5

25.      (3-Bromopropyl)triphenylphosphonium  bromide, 98% [3607-17-8] C21H21Br2P   FW  464.19

                                          Br(CH2)3P(C6H5)3 Br  

26.      (4-Bromobutyl)triphenylphosphonium bromide,  98% [7333-63-3]  C22H22Br2P   FW  478.22

                                      Br(CH2)4P(C6H5)3 Br

27.      Butyltriphenylphosphonium  bromide,  99%  [1779-51-7]  C22H24BrP   FW  399.32

                                     CH3(CH2)3P(C6H5)3 Br

28.      Butyltriphenylphosphonium  chloride,  97%  [13371-17-0]

          C22H24ClP   FW  354.86

                                     CH3(CH2)3P(C6H5)3 Cl

29.      (tert-Butoxycarbonylmethylene)triphenylphosphorane, 98% [35000-38-5]

          C24H25O2P   FW  376.44

                                   (C6H5)3P=CHCOOC(CH3)3

30.      (tert-Butoxycarbonylmethyl)triphenylphosphonium bromide,  98%

          C24H26BrO2P   FW  457.36

                                     (CH3)3PCH2COOC(CH3)3 Br

31.     Benzyltriphenylphosphonium  bromide,   96%   [1449-46-3]

          C25H22BrP   FW  433.34

                                       (CH3)3PCH2C6H5 Br

32.      Benzyltriphenylphosphonium  chloride,  99%  [1100-88-5]

          C25H22ClP   FW  388.88

                                       (CH3)3PCH2C6H5 Cl

33.      Benzyl(triphenylphosphoranylidene)acetate, 97%  [15097-38-8]

          C27H23O2P   FW  410.46

                                  (C6H5)3P=CHCOOCH2C6H5

34.      (Benzyloxycarbonylmethyl)phosphonium bromide,  97% [78385-36-1]

          C27H24BrO2P   FW  491.37

                                C6H5CH2OOCCH2P(C6H5)3 Br

35.     2-Chloro-1,3,2-dioxaphospholane,   97%  [822-39-9]

          C2H4ClO2P   FW  126.48

36.     2-Chloro-1,3,2-dioxaphospholane-2-oxide,  95%  [6609-64-9]

          C2H4ClO3P   FW  142.48

37.            2-Chloroethylphosphonic  acid,  97%  [16672-87-0]

C2H6ClO3P   FW  144.50

                                         ClCH2CH2P(O)(OH)2

38.     2-Chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane,  97% [2428-06-0]

          C5H10ClO2P   FW  168.56

39.     2-Chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane-2-oxide, 95% [4090-55-5]

          C5H10ClO3P   FW  184.56

40.     2-Chlorophenyl dichlorophosphate,  99% [15074-54-1]

C6H4Cl3O2P   FW  245.43

                                  ClC6H4OP(O)Cl2

41.            4-Chlorophenyl  dichlorophosphate,  99%  [772-79-2]

C6H4Cl3O2P   FW  245.43

                                  ClC6H4OP(O)Cl2

42.     2-Chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphospholane,  95% [14812-59-0]

          C6H12ClO2P   FW  182.59

43.     Chlorodiphenylphosphine,   95%  [1079-66-9]

          C12H10ClP   FW  220.64

                                               (C6H5)2PCl

44.     Chlorodicyclohexylphosphine,  97%   [16523-54-9]

          C12H22ClP   FW  232.74

                                              (C6H11)2PCl

45.     Cyclohexyldiphenylphosphine  oxide,  98%  [13689-20-8]

          C18H21OP   FW  284.34

                                           (C6H5)2P(O)C6H11

46.     Cyclohexyldiphenylphosphine,   98%  [6372-42-5]

          C18H21P   FW  268.34

                                             (C6H5)2PC6H11

47.             (Chloromethyl)triphenylphosphonium  chloride,  97%  [5293-84-5]

C19H17Cl2P   FW  347.23

                                        ClCH2P(C6H5)3 Cl

48.      (Cyanomethyl)triphenylphosphonium  chloride,  98%  [4336-70-3]

           C20H17ClNP   FW  337.79

                                           NCCH2P(C6H5)3 Cl

49.     (Carbomethoxymethyl)triphenylphosphonium bromide, 98%  [1779-88-4]    

          C21H20BrO2P   FW  415.28

                                     CH3OOCCH2P(C6H5)3 Br

50.     Cyclopropyltriphenylphosphonium  bromide,  98%  [14114-05-7]

 
          C21H20BrP   FW  383.27

51.     (Carbomethoxymethyl)triphenylphosphonium chloride, 97% [2181-97-7]

          C21H20ClO2P   FW  370.82

                                    CH3OOCCH2P(C6H5)3 Cl

52.     (Carbethoxymethylene)triphenylphosphorane,  95%   [1099-45-2]

          C22H21O2P   FW  348.38

                                      (C6H5)3P=CHCOOC2H5

53.     (Carbethoxymethyl)triphenylphosphonium  bromide, 98% [1530-45-6]

          C22H22BrO2P   FW  429.30

                                       C2H5OOCCH2P(C6H5)3 Br

54.     (3-Carboxypropyl)triphenylphosphonium  bromide,  98%  [17857-14-6]

          C22H22BrO2P   FW  429.30

                                         HOOC(CH2)3P(C6H5)3 Br

55.     (4-Carboxybutyl)triphenylphosphonium  bromide, 98%  [17814-85-6]

          C23H24BrO2P   FW  443.33

                                         HOOC(CH2)4P(C6H5)3 Br

56.     (4-Chlorobenzyl)triphenylphosphonium chloride,  98%  [1530-39-8]

          C25H21Cl2P   FW  423.33

                                        ClC6H4CH2P(C6H5)3 Cl

57.            Cinnamyltriphenylphosphonium chloride,  99%  [1530-35-4]

C27H24ClP   FW  414.92

                               C6H5CH=CHCH2P(C6H5)3 Cl

58.     Dichloroethylphosphine,   95%   [1498-40-4]

          C2H5Cl2P   FW  130.94

                                            C2H5PCl2

59.      Diethyl  methylphosphonate,  97%  [683-08-9]

          C5H13O3P   FW  152.13

                                            CH3P(O)(OC2H5)2

60.      Diethyl  ethylphosphonate,  98%  [78-38-6]

          C6H15O3P   FW  166.16

                                          CH3CH2P(O)(OC2H5)2

61.      Diethyl  (phthalimidomethyl)phosphonate,  97%  [33512-26-4]

          C13H16NO5P   FW  297.25

62.     Diethyl  [3-(N-phthalimido)propyl]phosphonate,  97%

          C15H20NO5P   FW  325.30

63.     Diethyl  1-propylphosphonate,  97%   [18812-51-6]

          C7H17O3P   FW  180.19

                                CH3CH2CH2P(O)(OC2H5)2

64.            Diethyl  1-tetradecylphosphonate,  98%  [5191-09-3]

C18H39O3P   FW  332.46

                                 CH3(CH2)13P(O)(OC2H5)2

65.            Diisobutyl  methylphosphonate,  97%  [7242-56-0]

C9H21O3P   FW  208.24

                                     [(CH3)2CHCH2O]2P(O)CH3

66.            Diisopropyl  cyanomethylphosphonate,  97%  [21658-95-7]

C8H16NO3P   FW  205.19

                                      [(CH3)2CHO]2P(O)CH2CN

67.     Diisopropyl  methylphosphonate,   95%   [1445-75-6]

          C7H17O3P   FW  180.18

                                        [(CH3)2CHO]2P(O)CH3

68.     Dimethylphosphinic  chloride,   97%   [1111-92-8]

          C2H6ClOP   FW  112.50

                                          (CH3)2P(O)Cl

69.     Dimethyl  chlorothiophosphate,  97%   [2524-03-0]

          C2H6ClO2PS   FW  160.56

                                            (CH3O)2P(S)Cl

70.     Dimethyl  chlorophosphate,  97%   [813-73-4]

          C2H6ClO3P   FW  144.50

                                            (CH3O)2P(O)Cl

71.     Dimethylphosphinic  acid,  97%   [3283-12-3]

          C2H7O2P   FW  94.05

                                            (CH3)2P(O)OH

72.     Dimethyl  phosphite,   98%  [868-85-9]

          C2H7O3P   FW  110.05

                                            (CH3O)2P(O)H

73.      Dimethyl methylphosphonate,  97%  [756-79-6]

C3H9O3P   FW  124.08

                                           (CH3O)2P(O)CH3

74.     Diethyl  chlorophosphite,   98%   [589-57-1]

          C4H10ClO2P   FW   156.55

                                              (C2H5O)2PCl

75.     Diethyl  chlorothiophosphate,  97%  [2524-04-1]

C4H10ClO2PS   FW  188.61

                                             (C2H5O)2P(S)Cl

76.     Diethyl  chlorophosphate,   97%  [814-49-3]

          C4H10ClO3P   FW  172.55

                                       (C2H5O)2P(O)Cl

77.     Diethyl  dithiophosphate, tech., 90%   [298-06-6]

          C4H11O2PS2   FW  186.23

                                        (C2H5O)2P(S)SH

78.      Diethyl dithiophosphate, potassium salt,  97%  [3454-66-8]

C4H10KO2PS2   FW   224.33

                                         (C2H5O)2P(S)SK

79.      O,O-Diethyl  thiophosphate, potassium salt,  98%  [5871-17-0]

C4H10KO3PS   FW  208.26

                                         (C2H5O)2P(O)SK

80.     Diethyl  phosphoramidate,  97%   [1068-21-9]

          C4H12NO3P   FW  153.12

                                        (C2H5O)2P(O)NH2

81.    Diethyl  (trichloromethyl)phosphonate,  97%  [866-23-9]

          C5H10Cl3O3P   FW  255.47

                                        (C2H5O)2P(O)CCl3

82.     Diethyl  cyanophosphonate,  tech., 90%  [2942-58-7]

          C5H10NO3P   FW  163.11

                                         (C2H5O)2P(O)CN

83.     Diethoxyphosphinyl  isocyanate,  tech., 90%  [20039-33-2]

          C5H10NO4P   FW  179.11

                                        (C2H5O)2P(O)NCO

84.     5,5-Dimethyl-1,3,2-dioxaphosphorinan-2-one,  96%  [4090-60-2]

          C5H11O3P   FW  150.11

85.     Dimethyl  (2-oxopropyl)phosphonate,  95%  [4202-14-6]

          C5H11O4P   FW   166.02

                                    CH3COCH2P(O)P(OCH3)2

86.     Diethyl  (chloromethyl)phosphonate,  97%  [3167-63-3]

          C5H12ClO3P   FW  186.58

                                       (C2H5O)2P(O)CH2Cl

87.     O,O-Diethyl  methylphosphonothioate,  97%  [6996-81-2]

          C5H13O2PS   FW  168.20

                                           (C2H5O)2P(S)CH3

88.     Diethyl  (hydroxymethyl)phosphonate,  97%   [3084-40-0]    

          C5H13O4P   FW  168.13

                                         (C2H5O)2P(O)CH2OH

89.     2,5-Dichlorophenyl  dichlorophosphate,  97%  [53676-18-9]

          C6H3Cl4O2P   FW  279.88

                                           Cl2P(O)OC6H3Cl2

90.     Dichlorophenylphosphine,  97%   [644-97-3]         

          C6H5Cl2P   FW  178.99

                                                 C6H5PCl2

91.      Diethyl  vinylphosphonate,  97%  [682-30-4]

C6H13O3P   FW  164.11

                                         (C2H5O)2P(O)CH=CH2

92.      Dimethyl  vinylphosphonate,  98%  [4645-32-3]

C4H9O3P   FW  136.09

                                          (CH3O)2P(O)CH=CH2

93.      Diethyl  phosphonoacetic  acid,  98%  [3095-95-2]

C6H13O5P   FW  196.14

                                        (C2H5O)2P(O)CH2COOH

94.     Diethyl  (2-bromoethyl)phosphonate,   97%  [5324-30-1]

          C6H14BrO3P   FW  245.06

                                         (C2H5O)2P(O)CH2CH2Br

95.     Diethyl  (2-chloroethyl)phosphonate,   95%  [10419-79-1]

          C6H14ClO3P   FW  200.60

                                          (C2H5O)2P(O)CH2CH2Cl

96.      Dipropyl  phosphite,  97%  [1809-21-8]

C6H15O3P   FW  166.16

                               (C3H7O)2P(O)H

97.     Diethyl (1-hydroxyethyl)phosphonate,  97%  [15336-73-9]

          C6H15O4P   FW  182.16

                                 (C2H5O)2P(O)CH(OH)CH3

98.     Diethyl  (2-cyanoethyl)phosphponate,   95%  [10123-62-3]

          C7H14NO3P   FW  191.17

                                      (C2H5O)2P(O)CH2CH2CN

99.     Diethyl  allylphosphonate,   98%  [1067-87-4]

          C7H15O3P   FW  178.17

                                      (C2H5O)2P(O)CH2CH=CH2

100.   Dimethyl  allylphosphonate,  tech., 85%  [757-54-0]

C5H11O3P   FW  150.12

                                        (CH3O)2P(O)CH2CH=CH2

101.     Dimethyl  cyclohexylphosphonate    [1641-61-8]

          C8H17O3P   FW  193.39

                                               (CH3O)2P(O)C6H11

102.     Diethyl  allyl  phosphate,   98%  [3066-75-9]    

          C7H15O4P   FW  194.17

                                      (C2H5O)2P(O)OCH2CH=CH2

103.     Diethyl  (2-oxopropyl)phosphonate,  96%   [1067-71-6]    

          C7H15O4P   FW  194.17

                                         (C2H5O)2P(O)CH2COCH3

104.    Diisopropyl  methylphosphonate,  95%  [1445-75-6]

C7H17O3P   FW  180.18

                             CH3P(O)[OCH(CH3)2]2

105.    Diisopropyl  ethylphosphonate,  95% 

C8H19O3P   FW  194.20

                           CH3CH2P(O)[OCH(CH3)2]2

106.     Diethyl  butylphosphonate,   99%   [2404-75-3]

          C8H19O3P   FW  194.21

                                 (C2H5O)2P(O)CH2CH2CH2CH3

107.    Diethyl  2-bromoethylphosphonate,  97%  [5324-30-1]

C6H14BrO3P   FW  245.06

                                      (C2H5O)2P(O)CH2CH2Br

108.     Diethyl   (3-aminopropyl)phosphonate,   95%  [4402-24-8]

          C7H18NO3P   FW  195.20

                                 (C2H5O)2P(O)CH2CH2CH2NH2

109.     Diethyl  1-decylphosphonate,  97%   [16165-68-7]

          C14H31O3P   FW  278.38

                                   (C2H5O)2P(O)CH2(CH2)8CH3

110.     N,N-Diisopropylmethylphosphonamidic  chloride, 95% [86030-43-5]

          C7H17ClNOP   FW  197.65

                                          [(CH3)2CH]2NP(OCH3)Cl

111.     Diethyl  2,2-dimethoxyethylphosphonate,  97%  [17053-13-3]

          C8H19O5P   FW  226.21

                                        (C2H5O)2P(O)CH2CH(OCH3)2

112.    Diethyl  5-hydantoylphosphonate,  96%  [95378-36-2]

 
C7H13N2O5P   FW  236.17

113.     Diethyl  trimethylsilyl  phosphite,  96%  [13716-45-5]

          C7H19O3PSi     FW  210.29

                                               (C2H5O)2POSi(CH3)3

114.    Diethyl  iodomethylphosphonate,  98%  [10419-77-9]

C5H12IO3P   FW  278.03

                                               (C2H5O)2P(O)CH2I

115.    Diethyl  1-naphthylmethylphosphonate,  95%  [53575-08-9]

C15H19O3P   FW  278.29

116.    Diethyl  1-octylphosphonate,  98%  [1068-07-1]

C12H27O3P   FW  250.32

                                 (C2H5O)2P(O)CH2(CH2)6CH3

117.     Dimethyl  phenylphosphonite,  97%   [2946-61-4]

          C8H11O2P   FW  170.15

                                                  C6H5P(OCH3)2

118.     Dimethylphenylphosphine,  97%  [672-66-2]     

          C8H11P   FW  138.15

                                                   C6H5P(CH3)2

119.     Diethyl  (2-oxobutyl)phosphonate,  96%  [1067-73-8]

          C8H17O4P   FW  208.19

                                  (C2H5O)2P(O)CH2COC2H5

120.     Dimethyl  (2-oxoheptyl)phosphonate, tech., 85% [36969-89-8]

C9H19O4P   FW  222.22

                               (CH3O)2P(O)CH2CO(CH2)4CH3

121.     Diethyl  (pyrrolidinomethyl)phosphonate,  97%  [51868-96-3]

          C9H20NO3P   FW  221.24

122.     Diethyl  4-nitrophenyl  phosphate, tech.,  90% [311-45-5]

          C10H14NO6P   FW  275.20

                                          (C2H5O)2P(O)OC6H4NO2

123 .   Diethyl  phenylphosphonite,   97%  [1638-84-4]

          C10H15O2P   FW  198.20

                                                  (C2H5O)2PC6H5

124.   Diethylphenylphosphine,  96%   [1605-53-4]

          C10H15P   FW  166.21

                                                 (C2H5)2PC6H5

125.   Diethyl phosphonoacetaldehyde  diethyl acetal, 95% [7598-61-0]

          C10H23O5P   FW  254.26

                                   (C2H5O)2P(O)CH2CH(OC2H5)2

126.   Diisopropyl (ethoxycarbonylmethyl)phosphonate, 95% [24074-26-8]

          C10H21O5P   FW  252.25

                                 [(CH3)2CHO]2P(O)CH2COOC2H5

127.   Diethyl  benzoylphosphonate,  97%  [3277-27-8]

          C11H15O4P   FW  242.22

                                   (C2H5O)2P(O)COC6H5

128.   Diethyl  4-chlorobenzylphosphonate,  97%  [39225-17-7]

          C11H16ClO3P   FW  262.67

                                  (C2H5O)2P(O)CH2C6H4Cl

129.   Diethyl  benzylphosphonate,  99%  [1080-32-6]

C11H17O3P   FW  228.23

                                   (C2H5O)2P(O)CH2C6H5

130.   Diethyl  (4-aminobenzyl)phosphonate,  99%  [20074-79-7]

          C11H18NO3P   FW  243.24

                                 (C2H5O)2P(O)CH2C6H4NH2

131.   Diphenylphosphinic  chloride,  98%   [1499-21-4]

          C12H10ClOP   FW  236.64

                                          (C6H5)2P(O)Cl

132.   Diphenyl  chlorophosphate,  99%  [2524-64-3]

          C12H10ClO3P   FW  258.64

                                        (C6H5O)2P(O)Cl

133.   Diphenylphosphine  oxide,  97%   [4559-70-0]

          C12H11OP   FW  202.20

                                          (C6H5)2P(O)H

134.   Diphenylphosphinic  acid,  99%  [1707-03-5]

C12H11O2P   FW  218.19

                                         (C6H5)2P(O)OH

135.   Diphenyl  phosphate,  99%  [838-85-7]

C12H11O4P   FW  250.19

                                        (C6H5O)2P(O)OH

136.   N,N-Diethyl-1,5-dihydro-2,4,3-benzodioxaphosphepin-3-amine, tech.,

          90%   [82372-35-8]

          C12H18NO2P   FW  239.26

137.   Diethyl  4-methylbenzylphosphonate,  97%  [3762-25-2]

          C12H19O3P   FW  242.25

                                    (C2H5O)2P(O)CH2C6H4CH3

138.   Diethyl  2-phenylethylphosphonate,   98%  [54553-21-8]

          C12H19O3P   FW  242.25

                                    (C2H5O)2P(O)CH2CH2C6H5

139.   Diethyl  1-phenylethylphosphonate,  98%  [33973-48-7]

          C12H19O3P   FW  242.25

                                    (C2H5O)2P(O)CH(CH3)C6H5

140.   Diethyl  4-methoxybenzylphosphonate,  98%  [1145-93-3]

C12H19O4P   FW  258.26

                                     (C2H5O)2P(O)CH2C6H4OCH3

141.   Diallyl  diisopropylphosphoramidite, tech., 90%  [126429-21-8]

          C12H24NO2P   FW  245.31

                                [(CH3)2CH]2NP(OCH2CH=CH2)2

142.   Dibutyl  butylphosphonate,  tech.,  90%  [78-46-6]

          C12H27O3P   FW  250.32

                                         (C4H9O)2P(O)(OC4H9)2

143.   Di-tert-butyl  diethylphosphoramidite, tech., 93% [117924-33-1]

          C12H28NO2P   FW  249.34

                                     [(CH3)3CO]2PN(C2H5)2

144.   Diphenyl  methyl  phosphate,  tech., 80%  [115-89-9]

          C13H13O4P   FW  264.22

                                       (C6H5O)2P(O)OCH3

145.   Dibenzyl  phosphate,  99%  [1623-08-1]

          C14H15O4P   FW  278.24

                                      (C6H5CH2O)2P(O)OH

146.   Diphenylpropylphosphine,  98%   [7650-84-2]

          C15H17P   FW  228.28

                                      (C6H5)2PCH2CH2CH3

147.   Dibenzyl  diethylphosphoramidite,  tech.,  85%  [67746-43-4]

          C18H24NO2P   FW  317.37

                                     (C6H5CH2O)2PN(C2H5)2

148.   Diphenyl(2-methoxyphenyl)phosphine,  98%  [53111-20-9]

          C19H17OP   FW  292.32

                                        (C6H5)2PC6H4OCH3

149.   Diphenyl(p-tolyl)phosphine,  96%  [1031-93-2]

          C19H17P   FW  276.32

                                          (C6H5)2PC6H4CH3

150.   4-(Dimethylamino)phenyldiphenylphosphine,  95%  [739-58-2]

          C20H20NP   FW  305.36

                                       (C6H5)2PC6H4N(CH3)2

151.   Dibenzyl  diisopropylphosphoramidite,  90+%  [108549-23-1]

          C20H28NO2P   FW  345.43

                                    [(CH3)2CH]2NP(OCH2C6H5)2

152.   Diphenyl(2,4,6-trimethylbenzoyl)phosphine  oxide, 97% [75980-60-8]

          C22H21O2P   FW  348.38

                                      (CH3)3C6H2COP(O)(C6H5)2

153.   (1,3-Dioxolan-2-ylmethyl)triphenylphosphonium bromide, 98%

          [52509-14-5]

          C22H22BrO2P   FW  429.30

154.   [2-(Dimethylamino)ethyl]triphenylphosphonium bromide,  97%

          [21331-80-6]

          C22H25BrNP   FW  414.33

                                     (CH3)2NCH2CH2P(C6H5)3 Br

155.   Dioctyl  phenylphosphonate,  95%  [1754-47-8]

          C22H39O3P   FW  382.52

                                        [CH3(CH2)7O]2P(O)C6H5

156.   Diethyl  phenylphosphonate,  97%  [1754-49-0]

C10H15O3P   FW  214.20

                                          (CH3CH2O)2P(O)C6H5

157.   [2-(1,3-Dioxolan-2-yl)ethyl]triphenylphosphonium  bromide,  97%

[86608-70-0]

          C23H24BrO2P   FW  443.33

158.   [3-(Dimethylamino)propyl]triphenylphosphonium  bromide,  99%

[27710-82-3]

          C23H27BrNP   FW  428.36

                                   (CH3)2NCH2CH2CH2P(C6H5)3 Br

159.   [2-(1,3-Dioxan-2-yl)ethyl]triphenylphosphonium  bromide,   98%

          [69891-92-5]

          C24H26BrO2P   FW  457.36

160.   Dodecyltriphenylphosphonium  bromide,  98%  [15510-55-1]

          C30H40BrP   FW  511.53

                                      CH3(CH2)11P(C6H5)3 Br

161.   Dihexadecyl  phosphate,  99%  [2197-63-9]

          C32H67O4P   FW  546.86

                                        [CH3(CH2)15O]2P(O)OH

162.   Ethyl  dichlorophosphite,   98%  [1498-42-6]

          C2H5Cl2OP   FW  146.94

                                                  C2H5OPCl2  

163.   Ethyl  dichlorophosphate,   96%  [1498-51-7]

          C2H5Cl2O2P   FW  162.94

                                                C2H5OP(O)Cl2  

164.   Ethyl  dichlorothiophosphate,   95%  [1498-64-2]

          C2H5Cl2OPS   FW  179.01

                                                 C2H5OP(S)Cl2  

165.   O-Ethylmethylphosphonothioate,  tech.,  90% [18005-40-8]

          C3H9O2PS   FW  140.14

                                             C2H5OP(S)(OH)CH3  

166.   Ethyl  methylphosphonate,  98%  [1832-53-7]

          C3H9O3P   FW  124.08

                                            CH3P(O)(OH)OC2H5

167.   Ethyl  dimethylphosphonoacetate,  98%  [311-46-6]

          C6H13O5P   FW  196.14

                                        (CH3O)2P(O)CH2COOC2H5

168.   Ethyl  phenylphosphinate,   94%  [2511-09-3]

          C8H11O2P   FW  170.15

                                      C6H5P(O)H(OC2H5)

169.   Ethyl  diphenylphosphine  oxide,   97%  [1733-57-9]

          C14H15OP   FW  230.25

                                       C2H5P(O)(C6H5)2

170.   Ethyl  diphenylphosphinite,   98%   [719-80-2]

          C14H15OP   FW  230.25

                                         C2H5OP(C6H5)2

171.   Ethyldiphenylphosphine,   98%   [607-01-2]

          C14H15P   FW  214.25

                                           C2H5P(C6H5)2

172.   Ethyltriphenylphosphonium  bromide,  99%  [1530-32-1]

          C20H20BrP   FW  371.26

                                         C2H5P(C6H5)3 Br

173.   Ethyltriphenylphosphonium  iodide,  95%   [4736-60-1]

          C20H20IP   FW   418.26

                                           C2H5P(C6H5)3 I

174.   [3-(Ethoxycarbonyl)-2-oxopropyl]triphenylphosphonium chloride,

95%   [106302-03-8]

C24H24ClO3P   FW  426.88

                                C2H5OOCCH2COCH2P(C6H5)3 Cl

175.   [3-(Ethoxycarbonyl)propyl]triphenylphosphonium bromide,  97%

          [50479-11-3]

          C24H26BrO2P   FW  457.36

                                     C2H5OOC(CH2)3P(C6H5)3 Br

176.   (4-Ethoxybenzyl)triphenylphosphonium  bromide,  99%  [82105-88-2]

          C27H26BrOP   FW  477.39

                                      C2H5OC6H4CH2P(C6H5)3 Br

177.   (4-Ethylbenzyl)triphenylphosphonium  chloride,  99%  [207291-53-0]

          C27H26ClP   FW  416.94

                                        C2H5C6H4CH2P(C6H5)3 Cl

178.   Hexylphosphonic  dichloride,  95%   [928-64-3]

          C6H13Cl2OP   FW  203.05

                                             CH3(CH2)5P(O)Cl2

179.   Hexamethylphosphoramide,   98%   [680-31-9]

          C6H18N3OP   FW  179.20

                                               [(CH3)2N]3PO

180.   Hexamethylphosphorous  triamide,   97%  [1608-26-0]

          C6H18N3P   FW  163.21

                                               [(CH3)2N]3P

181.   (4-Hydroxyphenyl)diphenylphosphine,   98%  [5068-21-3]

          C18H15OP   FW  278.28

                                            (C6H5)2PC6H4OH

182.   (2-Hydroxyethyl)triphenylphosphonium  bromide,  97%  [7237-34-5]

          C20H20BrOP   FW  387.26

                                       HOCH2CH2P(C6H5)3 Br

183.   (2-Hydroxyethyl)triphenylphosphonium  chloride,  98%  [23250-03-5]

          C20H20ClOP   FW  342.81

                                       HOCH2CH2P(C6H5)3 Cl

184.   Hexyltriphenylphosphonium  bromide,  95%  [4762-26-9]

          C24H28BrP   FW  428.37

                                       CH3(CH2)5P(C6H5)3 Br

185.   Hexyltriphenylphosphonium  iodide,  98%   [60106-53-8]

          C24H28IP   FW  474.37

                                       CH3(CH2)5P(C6H5)3 I

186.   (2-Hydroxybenzyl)triphenylphosphonium  bromide,  98% [70340-04-4]

          C25H22BrOP   FW  449.34

                                     HOC6H4CH2P(C6H5)3 Br

187.   Isopropyldiphenylphosphine  oxide,  97%  [2959-75-3]

          C15H17OP   FW  244.28

                                       (CH3)2CHP(O)(C6H5)2

188.   Isopropyltriphenylphosphonium  iodide,  98%  [24470-78-8]

          C21H22IP   FW  432.29

                                           (CH3)2CHP(C6H5)3 I

189.   Isobutyltriphenylphosphonium  bromide,  97%  [22884-29-3]

          C22H24BrP   FW  399.32

                                     (CH3)2CHCH2P(C6H5)3 Br

190.   Isoamyltriphenylphosphonium  bromide,  98%  [28322-40-9]

          C23H26BrP   FW  413.35

                                 (CH3)2CHCH2CH2P(C6H5)3 Br

191.   Methyl  diethylphosphonoacetate,   97%  [1067-74-9]

          C7H15O5P   FW  210.17

                                    (C2H5O)2P(O)CH2COOCH3

192.   Methyldiphenylphosphine  oxide,  98%  [2129-89-7]

C13H13OP   FW   216.22

                                              CH3P(O)(C6H5)2

193.   Methyl  diphenylphosphinite,   98%   [4020-99-9]

          C13H13OP   FW  216.22

                                          CH3OP(C6H5)2

194.   Methyldiphenylphosphine,  99%   [1486-28-8]

          C13H13P   FW  200.22

                                             CH3P(C6H5)2   

195.   (Methoxymethyl)diphenylphosphine  oxide,  98%  [4455-77-0]

          C14H15O2P   FW  246.25

                                    CH3OCH2P(O)(C6H5)2

196.   Methyltriphenylphosphonium  bromide,  98%  [1779-49-3]

          C19H18BrP   FW  357.24

                                           CH3P(C6H5)3 Br

197.   Methyltriphenylphosphonium  chloride,  97%  [1031-15-8]

          C19H18ClP   FW  312.77

                                          CH3P(C6H5)3 Cl

198.   Methyltriphenoxyphosphonium  iodide,  96%   [17579-99-6]

          C19H18IO3P   FW  452.23

                                         CH3P(OC6H5)3 I

199.   Methyltriphenylphosphonium  iodide,  97%   [2065-66-9]

          C19H18IP   FW  404.23

                                           CH3P(C6H5)3 I

200.   (Methoxymethyl)triphenylphosphonium  chloride, 97% [4009-98-7]

          C20H20ClOP   FW  342.81

                                            CH3OCH2P(C6H5)3  Cl

201.   Methyl (triphenylphosphoranylidene)acetate,  98%  [2605-67-6]

          C21H19O2P   FW  334.36

                                            CH3OOCH= P(C6H5)3  

202.   4-Nitrophenyl  phosphorodichloridate,  98%  [777-52-6]

          C6H4Cl2NO4P   FW  255.98

                                            O2NC6H4OP(O)Cl2

203.   4-Nitrophenyl  phosphate, disodium  salt hexahydrate, 98% [4264-83-9]

          C6H4Na2NO6P   FW  371.14

                              O2NC6H4OP(O)(ONa)2

204.   1-Naphthyl  phosphate,   99%  [1136-89-6] 

          C10H9O4P   FW  224.15

205.   2-Naphthyl  phosphate, disodium salt hydrate, 98% 

C10H7NaO4P . xH2O   FW  268.12 (anh.)

206.   (4-Nitrobenzyl)triphenylphosphonium  bromide,  97%  [2767-70-6]

          C25H21BrNO2P   FW  478.34

                                         O2NC6H4CH2P(C6H5)3 Br

207.   Propylphosphonic  dichloride, tech., 90% [4708-04-7]

          C3H7Cl2OP   FW  160.97

                                          CH3CH2CH2P(O)Cl2 

208.   Propylphosphonic  acid,  95%  [4672-38-2]

          C3H9O3P   FW  124.08

                                        CH3CH2CH2P(O)(OH) 2 

209.   1,2-Phenylene  phosphorochloridate, tech., 90% [1499-17-8]

          C6H4ClO3P   FW  190.52

210.   1,2-Phenylene  phosphorochloridite, tech., 90%  [1641-40-3]

          C6H4ClO2P   FW  174.52

211.   Phenylphosphonic  dichloride, tech., 90%  [824-72-6]

          C6H5Cl2OP   FW  194.99

                                                C6H5P(O)Cl2 

212.   Phenyl  dichlorophosphate,  95%  [770-12-7]

          C6H5Cl2O2P   FW  210.98

                                               C6H5OP(O)Cl2 

213.   Phenylphosphinic  acid,  99%  [1779-48-2]

          C6H7O2P   FW  142.09

                                             C6H5P(O)H(OH)

214.   Phenylphosphonic  acid,  98%  [1571-33-1]

          C6H7O3P   FW  158.09

                                               C6H5P(O)(OH)2

215.   Phenyl  phosphate, disodium salt  dihydrate,  98%  [3279-54-7]

          C6H5Na2O4P   FW  254.09

                                     C6H5OP(O)(ONa)2 . 2H2O

216.   Propargyltriphenylphosphonium  bromide, 98%  [2091-46-5]

C21H18BrP   FW  381.26

217.   Propyltriphenylphosphonium  bromide,  98%  [15912-75-1]

          C21H22BrP   FW  385.29

                                      CH3CH2CH2P(C6H5)3 Br

218.   Pentyltriphenylphosphonium  bromide, 99%  [21406-61-1]

          C23H26BrP   FW  413.35

                                        CH3(CH2)4P(C6H5)3 Br

219.   2,2,2-Trichloroethyl  phosphorodichloridite, 97% [60010-51-7]

          C2H2Cl5OP   FW  250.28

                                               Cl3CCH2OPCl2

220.   2,2,2-Trichloroethyl  phosphorodichloridate,  98%  [18868-46-7]

          C2H2Cl5O2P   FW  266.28

                                            Cl3CCH2OP(O)Cl2

221.   Tetramethyl phosphorodiamidic  chloride,  tech.,  90% [1605-65-8]

          C4H12ClN2OP   FW  170.58

                                             [(CH3)2N]2P(O)Cl

222.   Trimethyl  phosphonoacetate,  98%   [5927-18-4]

          C5H11O5P   FW  182.11

                                       (CH3O)2P(O)CH2COOCH3

223.   Tris(2-chloroethyl)  phosphite,  97%  [140-08-9]

C6H12Cl3O3P   FW  269.49

                                                P(OCH2CH2Cl)3

224.   Triethyl  phosphonoacetate,   98%  [867-13-0]

          C8H17O5P   FW  224.19

                                    (C2H5O)2P(O)CH2COOC2H5

225.   Tetraethylphosphonium  bromide,  97%  [4317-07-1]

          C8H20BrP   FW  227.13   

                                                   (C2H5)4PBr

226.   Tetraethyl  pyrophosphite,  97%  [21646-99-1]

C8H20O5P2   FW  258.19

                                     (C2H5O)2POP(OC2H5)2

227.   Tris(2-carboxyethyl)phosphine  hydrochloride,  98%  [51805-45-9]

          C9H15O6P . HCl   FW  286.65

                                       (HOOCCH2CH2)3P . HCl

228.   Triallylphosphine,  95%   [16523-89-0]

          C9H15P   FW  154.19

                                           (CH2=CHCH2)3P

229.   Triethyl  2-phosphonopropionate,  98%  [3699-66-9]

          C9H19O5P   FW  238.22

                              (C2H5O)2P(O)CH(CH3)COOC2H5

230.   Triethyl  3-phosphonopropionate,  98%   [3699-67-0]

          C9H19O5P   FW  238.22

                               (C2H5O)2P(O)CH(CH3)COOC2H5

231.   Triisopropyl  phosphite,  95%  [116-17-6]

          C9H21O3P   FW  208.24

                                         [(CH3)2CHO]3P

232.   Triisopropylphosphine, tech., 90%  [6476-36-4]

C9H21P   FW  160.24

                                          [(CH3)2CH]3P

233.   Tripropylphosphine,  97%  [2234-97-1]

C9H21P   FW  160.24

                                         (CH3CH2CH2)3P

234.   Tetraethyl  methylenediphosphonate,  97%  [1660-94-2]

          C9H22O6P2   FW  288.22

                                       CH2[P(O)(OC2H5)2]2

235.   Triethyl  4-phosphonocrotonate,  tech.,  90%  [10236-14-3]

          C10H19O5P   FW  250.23

                            (C2H5O)2P(O)CH2CH=CHCOOC2H5

236.   Triethyl  3-methyl-4-phosphonocrotonate,  tech., 80% [41891-54-7]

C11H21O5P   FW  264.26

                          (C2H5O)2P(O)CH2C(CH3)=CHCOOC2H5

237.   Tri-2-furylphosphine,  99%  [5518-52-5]

          C12H9O3P   FW  232.18

238.   Tris(1-pyrrolidinyl)phosphine,  97%  [5666-12-6]

C12H24N3P   FW  241.32

239.   Tributylphosphine  oxide,  95%  [814-29-9]

          C12H27OP   FW  218.32

                                          [CH3(CH2)3]3P(O)

240.   Tributyl phosphite,  tech.,  90%  [102-85-2]

          C12H27O3P   FW  250.32

                                    [CH3(CH2)3O]3P

241.   Tributyl  phosphate,  99%  [126-73-8]

          C12H27O4P   FW  266.32

                                   [CH3(CH2)3O]3P(O)

242.   Tris(4-chlorophenyl)phosphine,  95%  [1159-54-2]

          C18H12Cl3P   FW  365.63

                                         (ClC6H4)3P

243.   Triphenylphosphine  oxide,  98%  [791-28-6]

          C18H15OP   FW  278.28

                                         (C6H5)3P(O)

244.   Triphenyl  phosphite,  97%   [101-02-0]

          C18H15O3P   FW  310.29

                                          (C6H5O)3P

245.   Triphenyl  phosphate,  99%   [115-86-6]

          C18H15O4P   FW  326.29

                                        (C6H5O)3P(O)

246.   Triphenylphosphine,  99%  [603-35-0]

C18H15P   FW  262.29

                                           (C6H5)3P

247.   Triphenylphosphine  hydrobromide, 97%  [6399-81-1]

          C18H15P . HBr   FW  343.21

                                      (C6H5)3P . HBr

248.   Triphenylphosphine  sulfide,  98%  [3878-45-3]

          C18H15PS   FW  294.36

                                          (C6H5)3P(S)

249.   Tris(2-butoxyethyl)phosphate,  94%  [78-51-3]

          C18H39O7P   FW  398.48

                                 [CH3(CH2)3OCH2CH2O]3P(O)

250.   1-Triphenylphosphoranylidene-2-propanone,  99% [1439-36-7]

C21H19OP   FW  318.36

                                       (C6H5)3P=CHCOCH3

251.   2-(Triphenylphosphoranylidene)propionaldehyde, 98% [24720-64-7]

C21H19OP   FW  318.36

                                       (C6H5)3P=C(CH3)CHO

252.   Tris(3-methoxyphenyl)phosphine,   97%  [29949-84-6]

C21H21O3P   FW  352.37

                                            (CH3OC6H4)3P

253.   Tris(4-methoxyphenyl)phosphine,   95%  [855-38-9]

C21H21O3P   FW  352.37

                                            (CH3OC6H4)3P

254.   Tribenzylphosphine,   95%   [7650-89-7]

          C21H21P   FW  304.38

                                            (C6H5CH2)3P

255.   Tri-o-tolylphosphine,   97%   [6163-58-2]

          C21H21P   FW  304.38

                                           (CH3C6H4)3P

256.   Tri-m-tolylphosphine,   98%  [6224-63-1]

          C21H21P   FW  304.38

                                           (CH3C6H4)3P

257.   Tri-p-tolylphosphine,  98%  [1038-95-5]

          C21H21P   FW  304.38

                                           (CH3C6H4)3P

258.   Tetraphenylphosphonium  bromide,  97%  [2751-90-8]

          C24H20BrP   FW  419.31

                                              (C6H5)4PBr

259.   Tetraphenylphosphonium  iodide,  98%  [2065-67-0]

          C24H20IP   FW  466.31

                                              (C6H5)4PI

260.   Tetraphenylphosphonium  chloride,  98%  [2001-45-8]

          C24H20ClP   FW  374.86

                                            (C6H5)4PCl

261.   Triphenyl(2-pyridylmethyl)phosphonium  chloride hydrochloride,

          98%   [99662-46-1]

          C24H21ClNP   FW   426.33

262.   Tris(2,6-dimethoxyphenyl)phosphine,   98%  [85417-41-0]

          C24H27O6P   FW  442.45

                                    [(CH3O)2C6H3]3P

263.   Trioctylphosphine  oxide,  99%  [78-50-2]

C24H51OP   FW  386.65

                                          [CH3(CH2)7]3P(O)

264.   Trioctylphosphine,  tech.,  90%  [4731-53-7]

C24H51P   FW  370.65

                                             [CH3(CH2)7]3P

265.   Tris(2,4,6-trimethoxyphenyl)phosphine,   95%  [91608-15-0]

C27H33O9P   FW  532.53

                                         [(CH3O)3C6H2]3P

266.   Tris(2,4,6-trimethylphenyl)phosphine,   97%  [23897-15-6]

          C27H33P   FW  388.54

                                          [(CH3)3C6H2]3P

267.   Tetraethyl  ethylenediphosphonate,  97%  [995-32-4]

          C10H24O6P2   FW  302.24

                             (C2H5O)2P(O)CH2CH2P(O)(OC2H5)2