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Sildenafil Pharmaceutical Reference Standards

4-nitro-1-nitroso-3-propyl-1H-pyrazole-5-carboxamide

SILDENAFIL IMPURITIES, IMPURITIES
4-nitro-1-nitroso-3-propyl-1H-pyrazole-5-carboxamide

CAT No. : CS-O-42917
Mol F. : C7H9N5O4
Mol W. : 227.18 g/mol
Cas No. : Not Available
Stock : Enquire
Benzyl Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Benzyl Sildenafil

CAT No. : CS-P-00354
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1446089-82-2
Stock : Enquire
De(methypiperazinyl) Sildenafil Dimer Impurity

SILDENAFIL IMPURITIES, IMPURITIES
De(methypiperazinyl) Sildenafil Dimer Impurity

CAT No. : CS-T-51868
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1346603-48-2
Stock : Enquire
Demethylpiperazinyl 7-Desoxo 7-Thioxosildenafil Sulfonic Acid

SILDENAFIL IMPURITIES, IMPURITIES
Demethylpiperazinyl 7-Desoxo 7-Thioxosildenafil Sulfonic Acid

CAT No. : CS-T-15198
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1353018-10-6
Stock : Enquire
Demethylpiperazinyl Desethyl Sildenafil Sulfonyl Chloride

SILDENAFIL IMPURITIES, IMPURITIES
Demethylpiperazinyl Desethyl Sildenafil Sulfonyl Chloride

CAT No. : CS-T-15207
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 139756-27-7
Stock : Enquire
Demethylpiperazinyl Iso Sildenafil Sulfonyl Chloride

SILDENAFIL IMPURITIES, IMPURITIES
Demethylpiperazinyl Iso Sildenafil Sulfonyl Chloride

CAT No. : CS-T-73856
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 501120-42-9
Stock : Enquire
Descarbonsildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Descarbonsildenafil

CAT No. : CS-T-15923
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1393816-99-3
Stock : Enquire
Descarbonsildenafil-d6

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Descarbonsildenafil-d6

CAT No. : CS-T-99310
Mol F. : Not Available
Mol W. : Not Available
Cas No. : Not Available
Stock : Enquire
Desethyl Sildenafil

SILDENAFIL METABOLITES, METABOLITES
Desethyl Sildenafil

CAT No. : CS-O-10905
Mol F. : C₂₀H₂₆N₆O₄S
Mol W. : 446.52 g/mol
Cas No. : 139755-91-2
Stock : IN-Stock
Desethyl Sildenafil D3

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Desethyl Sildenafil D3

CAT No. : CS-T-52145
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1346603-75-5
Stock : Enquire
Desmethyl Thiosildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Desmethyl Thiosildenafil

CAT No. : CS-T-89064
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 479073-86-4
Stock : Enquire
Desmethyl Thiosildenafil D8

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Desmethyl Thiosildenafil D8

CAT No. : CS-EO-02367
Mol F. : C21H20D8N6O3S2
Mol W. : 484.66 g/mol
Cas No. : 1215321-44-0
Stock : Enquire
Dimethylsildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Dimethylsildenafil

CAT No. : CS-O-48218
Mol F. : C23H32N6O4S
Mol W. : 488.61 g/mol
Cas No. : 1416130-63-6
Stock : Enquire
Homo Sildenafil

SILDENAFIL API STANDARDS, API STANDARDS
Homo Sildenafil

CAT No. : CS-T-78715
Mol F. : C₂₃H₃₂N₆O₄S
Mol W. : 488.61 g/mol
Cas No. : 642928-07-2
Stock : IN-Stock
Homo sildenafil-d5 (ethyl-d5)

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Homo sildenafil-d5 (ethyl-d5)

CAT No. : CS-P-04792
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1216711-61-3
Stock : Enquire
Hydroxyhomo Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Hydroxyhomo Sildenafil

CAT No. : CS-T-78373
Mol F. : C₂₃H₃₂N₆O₅S
Mol W. : 504.60 g/mol
Cas No. : 139755-85-4
Stock : IN-Stock
Hydroxythiohomo Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Hydroxythiohomo Sildenafil

CAT No. : CS-K-00212
Mol F. : C23H32N6O4S2
Mol W. : 520.67 g/mol
Cas No. : 479073-82-0
Stock : Enquire
Iso Sildenafil-d3

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Iso Sildenafil-d3

CAT No. : CS-T-99191
Mol F. : C22H27D3N6O4S
Mol W. : 477.59 g/mol
Cas No. : 1794829-17-6
Stock : Enquire
Methisosildenafil

SILDENAFIL INTERMEDIATES, INTERMEDIATES
Methisosildenafil

CAT No. : CS-T-82285
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 496835-35-9
Stock : Enquire
Methisosildenafil-d4

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Methisosildenafil-d4

CAT No. : CS-T-80255
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1246819-66-8
Stock : Enquire
N-(Desmethyl)-tert-butyl Acetate Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
N-(Desmethyl)-tert-butyl Acetate Sildenafil

CAT No. : CS-T-88449
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 398507-63-6
Stock : Enquire
N,N-Didesmethyl Sildenafil

SILDENAFIL METABOLITES, METABOLITES
N,N-Didesmethyl Sildenafil

CAT No. : CS-O-46085
Mol F. : C20H26N6O4S
Mol W. : 446.53 g/mol
Cas No. : 324523-96-8
Stock : Enquire
N-Desmethyl sildenafil

SILDENAFIL METABOLITES, METABOLITES
N-Desmethyl sildenafil

CAT No. : CS-O-05840
Mol F. : C21H28N6O4S
Mol W. : 460.55 g/mol
Cas No. : 139755-82-1
Stock : IN-Stock
N-desmethyl Sildenafil D8

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
N-desmethyl Sildenafil D8

CAT No. : CS-O-06962
Mol F. : C₂₁H₂₀D₈N₆O₄S
Mol W. : 468.60 g/mol
Cas No. : 1185168-06-2
Stock : IN-Stock
N-Desmethyl Sildenafil N-Glucuronide

SILDENAFIL GLUCURONIDES, GLUCURONIDES
N-Desmethyl Sildenafil N-Glucuronide

CAT No. : CS-O-52732
Mol F. : C27H36N6O10S
Mol W. : 636.67 g/mol
Cas No. : Not Available
Stock : Enquire
N-Desmethyl-N-benzyl Sildenafil-d5

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
N-Desmethyl-N-benzyl Sildenafil-d5

CAT No. : CS-T-99299
Mol F. : C28H29D5N6O4S
Mol W. : 555.7 g/mol
Cas No. : Not Available
Stock : Enquire
N-Desmethylsildenafil dihydrochloride

SILDENAFIL METABOLITES, METABOLITES
N-Desmethylsildenafil dihydrochloride

CAT No. : CS-EK-02929
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1261395-01-0
Stock : Enquire
Nitroso-prodenafil

SILDENAFIL IMPURITIES, IMPURITIES
Nitroso-prodenafil

CAT No. : CS-P-08852
Mol F. : C27H35N9O5S2
Mol W. : 629.77 g/mol
Cas No. : 1266755-08-1
Stock : Enquire
N-Nitroso N-desmethyl Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
N-Nitroso N-desmethyl Sildenafil

CAT No. : CS-O-42896
Mol F. : C21H27N7O5S
Mol W. : 489.55 g/mol
Cas No. : Not Available
Stock : IN-Stock
N-Nitroso Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
N-Nitroso Sildenafil

CAT No. : CS-O-42895
Mol F. : C22H29N7O5S
Mol W. : 503.6 g/mol
Cas No. : Not Available
Stock : Enquire
N-Nitroso Sildenafil Impurity 1

SILDENAFIL IMPURITIES, IMPURITIES
N-Nitroso Sildenafil Impurity 1

CAT No. : CS-EO-02718
Mol F. : C21H27N7O5S
Mol W. : 489.6 g/mol
Cas No. : Not Available
Stock : Enquire
Norneo Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Norneo Sildenafil

CAT No. : CS-T-83319
Mol F. : C₂₂H₂₉N₅O₄S
Mol W. : 459.56 g/mol
Cas No. : 371959-09-0
Stock : IN-Stock
Norneosildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Norneosildenafil

CAT No. : CS-B-00324
Mol F. : C22H29N5O4S
Mol W. : 459.56 g/mol
Cas No. : Not Available
Stock : Enquire
O-Desethyl-O-propyl Methisosildenafil

SILDENAFIL IMPURITIES, IMPURITIES
O-Desethyl-O-propyl Methisosildenafil

CAT No. : CS-T-73393
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1391053-82-9
Stock : Enquire
O-Desethyl-O-propyl Methisosildenafil-d4

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
O-Desethyl-O-propyl Methisosildenafil-d4

CAT No. : CS-T-96819
Mol F. : C24H30D4N6O4S
Mol W. : 506.65 g/mol
Cas No. : Not Available
Stock : Enquire
Piperazine N, N-Desethyl Sildenafil

SILDENAFIL METABOLITES, METABOLITES
Piperazine N, N-Desethyl Sildenafil

CAT No. : CS-O-46084
Mol F. : C20H28N6O4S
Mol W. : 448.54 g/mol
Cas No. : 466684-88-8
Stock : Enquire
Propoxyphenyl ​thiohydroxyhomosilde​nafil-d4

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Propoxyphenyl ​thiohydroxyhomosilde​nafil-d4

CAT No. : CS-T-94456
Mol F. : C24H30D4N6O4S2
Mol W. : 538.72 g/mol
Cas No. : 479073-90-0 unlabelled
Stock : Enquire
Propoxyphenyl Homohydroxysildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Propoxyphenyl Homohydroxysildenafil

CAT No. : CS-T-85493
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 139755-87-6
Stock : Enquire
Propoxyphenyl Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Propoxyphenyl Sildenafil

CAT No. : CS-P-00252
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 877777-10-1
Stock : Enquire
Propoxyphenyl Thiosildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Propoxyphenyl Thiosildenafil

CAT No. : CS-T-40727
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 479073-87-5
Stock : Enquire
Propoxyphenyl-thiohydroxyhomosildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Propoxyphenyl-thiohydroxyhomosildenafil

CAT No. : CS-T-40726
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 479073-90-0
Stock : Enquire
Propoxyphenyl-thiosildenafil-d8

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Propoxyphenyl-thiosildenafil-d8

CAT No. : CS-T-96780
Mol F. : C23H24D8N6O3S2
Mol W. : 512.72 g/mol
Cas No. : Not Available
Stock : Enquire
Pyrazole N-Demethyl Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Pyrazole N-Demethyl Sildenafil

CAT No. : CS-T-85564
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 139755-95-6
Stock : Enquire
Pyrazole N-Demethyl Sildenafil-d3

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Pyrazole N-Demethyl Sildenafil-d3

CAT No. : CS-T-85129
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1185044-03-4
Stock : Enquire
Sildenafil

SILDENAFIL API STANDARDS, API STANDARDS
Sildenafil

CAT No. : CS-O-31711
Mol F. : C₂₂H₃₀N₆O₄S
Mol W. : 474.58 g/mol
Cas No. : 139755-83-2
Stock : IN-Stock
Sildenafil Chlorosulfone

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Chlorosulfone

CAT No. : CS-O-08159
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 139756-22-2
Stock : Enquire
Sildenafil citrate

SILDENAFIL API STANDARDS, API STANDARDS
Sildenafil citrate

CAT No. : CS-O-30760
Mol F. : C₂₈H₃₈N₆O₁₁S
Mol W. : 666.70 g/mol
Cas No. : 171599-83-0
Stock : IN-Stock
Sildenafil citrate (Y0001578)

SILDENAFIL EP STANDARDS, EP STANDARDS
Sildenafil citrate (Y0001578)

CAT No. : CS-EG-00676
Mol F. : C28H38N6O11S
Mol W. : 666.70 g/mol
Cas No. : 171599-83-0
Stock : Enquire
Sildenafil Citrate Impurity 2

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Citrate Impurity 2

CAT No. : CS-O-14093
Mol F. : C₁₄H₂₀N₂O₄S
Mol W. : 312.39 g/mol
Cas No. : 332374-42-2
Stock : IN-Stock
Sildenafil Citrate Impurity 3

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Citrate Impurity 3

CAT No. : CS-O-14094
Mol F. : C₂₂H₃₂N₆O₄S
Mol W. : 476.6 g/mol
Cas No. : 332374-45-5
Stock : IN-Stock
Sildenafil Citrate Impurity-1

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Citrate Impurity-1

CAT No. : CS-O-08158
Mol F. : C₈H₁₄N₄O
Mol W. : 182.22 g/mol
Cas No. : 139756-02-8
Stock : IN-Stock
Sildenafil D3

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Sildenafil D3

CAT No. : CS-O-06964
Mol F. : C₂₂H₂₇D₃N₆O₄S
Mol W. : 477.59 g/mol
Cas No. : 1126745-90-1
Stock : IN-Stock
Sildenafil D5

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Sildenafil D5

CAT No. : CS-EO-02581
Mol F. : C22H25D5N6O4S
Mol W. : 479.6 g/mol
Cas No. : 139755-83-2(Unlabeled)
Stock : Enquire
Sildenafil D8

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Sildenafil D8

CAT No. : CS-O-06963
Mol F. : C₂₂H₂₂D₈N₆O₄S
Mol W. : 482.63 g/mol
Cas No. : 951385-68-5
Stock : IN-Stock
Sildenafil Dimer Impurity

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Dimer Impurity

CAT No. : CS-DG-00019
Mol F. : C38H46N10O8S2
Mol W. : 834.96 g/mol
Cas No. : 1346602-67-2
Stock : IN-Stock
Sildenafil dimer-D8

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Sildenafil dimer-D8

CAT No. : CS-O-41251
Mol F. : C38H38D8N10O8S2
Mol W. : 842.34 g/mol
Cas No. : 1346602-67-2(unlabeled)
Stock : IN-Stock
Sildenafil EP Impurity D

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil EP Impurity D

CAT No. : CS-O-14710
Mol F. : C17H20N4O5S
Mol W. : 392.4 g/mol
Cas No. : 1357931-55-5
Stock : IN-Stock
Sildenafil EP Impurity E

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil EP Impurity E

CAT No. : CS-O-41518
Mol F. : C3H4N2Na
Mol W. : 91.03 g/mol
Cas No. : 5587-42-8
Stock : Enquire
Sildenafil for peak identification (Y0001891)

SILDENAFIL EP STANDARDS, EP STANDARDS
Sildenafil for peak identification (Y0001891)

CAT No. : CS-EG-00687
Mol F. : C28H38N6O11S
Mol W. : 666.70 g/mol
Cas No. : 171599-83-0
Stock : Enquire
Sildenafil Impurity 3

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Impurity 3

CAT No. : CS-EO-00729
Mol F. : C18H22N4O2
Mol W. : 326.4 g/mol
Cas No. : 1467610-65-6
Stock : Enquire
Sildenafil Impurity A

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Impurity A

CAT No. : CS-O-08160
Mol F. : C₂₃H₃₂N₆O₄S
Mol W. : 488.60 g/mol
Cas No. : 1391053-95-4
Stock : IN-Stock
Sildenafil impurity A (Y0001579)

SILDENAFIL EP STANDARDS, EP STANDARDS
Sildenafil impurity A (Y0001579)

CAT No. : CS-EG-00647
Mol F. : C23H32N6O4S
Mol W. : 488.60 g/mol
Cas No. : 1391053-95-4
Stock : Enquire
Sildenafil Methyl Sulfonate Ester Impurity

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Methyl Sulfonate Ester Impurity

CAT No. : CS-EO-03125
Mol F. : C18H22N4O5S
Mol W. : 406.5 g/mol
Cas No. : 2512206-40-3
Stock : Enquire
Sildenafil open ring Impurity

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil open ring Impurity

CAT No. : CS-O-43275
Mol F. : C22H32N6O5S
Mol W. : 492.59 g/mol
Cas No. : 200575-15-1
Stock : Enquire
Sildenafil Related Compound

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil Related Compound

CAT No. : CS-P-00253
Mol F. : Not Available
Mol W. : Not Available
Cas No. : Not Available
Stock : Enquire
Sildenafil Related Compound A (F0K413)

SILDENAFIL USP STANDARDS, USP STANDARDS
Sildenafil Related Compound A (F0K413)

CAT No. : CS-EB-01961
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1391053-95-4
Stock : Enquire
Sildenafil Related Compound A(Secondary Standards traceble to USP)

SILDENAFIL SECONDARY STANDARDS, SECONDARY STANDARDS
Sildenafil Related Compound A(Secondary Standards traceble to USP)

CAT No. : CS-ER-01953
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1391053-95-4
Stock : Enquire
Sildenafil-d3 citrate

SILDENAFIL STABLE ISOTOPE REAGENT, STABLE ISOTOPE REAGENT
Sildenafil-d3 citrate

CAT No. : CS-C-02139
Mol F. : C28H35D3N6O11S
Mol W. : 669.72 g/mol
Cas No. : 1126745-90-1 (Freebase)
Stock : Enquire
Sildenafil-d8 citrate

SILDENAFIL STABLE ISOTOPE REAGENT, STABLE ISOTOPE REAGENT
Sildenafil-d8 citrate

CAT No. : CS-C-02138
Mol F. : C28H30D8N6O11S
Mol W. : 674.75 g/mol
Cas No. : 1215071-03-6
Stock : Enquire
Sildenafil-N-Oxide

SILDENAFIL IMPURITIES, IMPURITIES
Sildenafil-N-Oxide

CAT No. : CS-O-01446
Mol F. : C₂₂H₃₀N₆O₅S
Mol W. : 490.58 g/mol
Cas No. : 1094598-75-0
Stock : IN-Stock
Thiodimethyl sildenafil

SILDENAFIL METABOLITES, METABOLITES
Thiodimethyl sildenafil

CAT No. : CS-O-08164
Mol F. : C₂₃H₃₂N₆O₃S₂
Mol W. : 504.67 g/mol
Cas No. : 1260112-90-0
Stock : IN-Stock
Thiohomo Sildenafil

SILDENAFIL IMPURITIES, IMPURITIES
Thiohomo Sildenafil

CAT No. : CS-T-44185
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 479073-80-8
Stock : Enquire
Thiosildenafil

SILDENAFIL INTERMEDIATES, INTERMEDIATES
Thiosildenafil

CAT No. : CS-T-86367
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 479073-79-5
Stock : Enquire
Thiosildenafil-d3

SILDENAFIL STABLE ISOTOPES, STABLE ISOTOPES
Thiosildenafil-d3

CAT No. : CS-T-86490
Mol F. : Not Available
Mol W. : Not Available
Cas No. : 1216671-11-2
Stock : Enquire