Sildenafil > Impurities > 26

Structure Compound Pricing
Demethylpiperazinyl 7-Desoxo 7-Thioxosildenafil Sulfonic Acid
CS-T-15198 > Impurities

Molecular Formula : C17H20N4O4S2   Molecular Weight: 408.5   CAS Number: 1353018-10-6
Synonyms : 4-(ethyl(2,4,6-triiodo-3-(methylamino)phenyl)amino)-4-oxobutanoic acid
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5-(2-Ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidine-7-thione
CS-T-22410 > Impurities

Molecular Formula : C17H20N4OS   Molecular Weight: 328.43   CAS Number: 479074-06-1
Synonyms : 5-(2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidine-7(4H)-thione
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2-Ethoxybenzoyl chloride 
CS-O-08156 > Impurities

Molecular Formula : C9H9ClO2   Molecular Weight: 184.62   CAS Number: 42926-52-3
Synonyms : 2-ethoxybenzoylchloride
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Sildenafil Citrate Impurity-1
CS-O-08158 > Impurities

Molecular Formula : C8H14N4O   Molecular Weight: 182.22   CAS Number: 139756-02-8
Synonyms : Sildenafil Citrate Impurity-1;4-amino-1-methyl-3-propyl-1H-pyrazole-5carboxamide;4-Amino-1-methyl-3-propylpyrazole-5carboxamide.
Parent API : Sildenafil
USD 122.00 / 10mg
USD 182.00 / 25mg
USD 274.00 / 50mg
Hydroxy Chlorodenafil
CS-T-26679 > Impurities

Molecular Formula : C19H23ClN4O3   Molecular Weight: 390.87   CAS Number: 1391054-00-4
Synonyms : 5-[5-enyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one;5-(5-(2-chloro-1-hydroxyethyl)-2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(4H)-one
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Sildenafil EP Impurity D
CS-O-14710 > Impurities

Molecular Formula : C17H20N4O5S   Molecular Weight: 392.43   CAS Number: 1357931-55-5
Synonyms : 3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxybenzenesulfonic acid;Sildenafil Impurity D;Desmethylpiperazinyl Sildenafil Sulfonic Acid.
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De(methypiperazinyl) Sildenafil Dimer Impurity
CS-T-51868 > Impurities

Molecular Formula : C34H38N8O6S   Molecular Weight: 686.78   CAS Number: 1346603-48-2
Synonyms : 5,5'-(sulfonylbis(2-ethoxy-5,1-phenylene))bis(1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(4H)-one)
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Sildenafil Dimer Impurity
CS-DG-00019 > Impurities

Molecular Formula : C38H46N10O8S2   Molecular Weight: 834.97   CAS Number: 1346602-67-2
Synonyms : 5-[2-ethoxy-5-[4-[4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl]sulfonylpiperazin-1-yl]sulfonylphenyl]-1-methyl-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-7-one
Parent API : Sildenafil
USD 684.00 / 10mg
USD 1,026.00 / 25mg
USD 1,539.00 / 50mg
Sildenafil Citrate Impurity 3
CS-O-14094 > Impurities

Molecular Formula : C22H32N6O4S   Molecular Weight: 476.6   CAS Number: 332374-45-5
Synonyms : Sildenafil Citrate Impurity 3;(E)-4-((2-ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)benzylidene)amino)-1-methyl-3-propyl-1H-pyrazole-5-carboxamide.
Parent API : Sildenafil
USD 274.00 / 10mg
USD 410.00 / 25mg
USD 616.00 / 50mg
3-(6,7-Dihydro-1-methyl-3-propyl-7-thioxo-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride
CS-T-53103 > Impurities

Molecular Formula : C17H19ClN4O3S2   Molecular Weight: 426.94   CAS Number: 479074-07-2
Synonyms : 4-ethoxy-3-(1-methyl-3-propyl-7-thioxo-4,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride
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1-Methyl-4-nitro-3-propylpyrazole-5-carboxamide
CS-T-34289 > Impurities

Molecular Formula : C8H12N4O3   Molecular Weight: 212.21   CAS Number: 139756-01-7
Synonyms : 1-Methyl-4-nitro-3-n-propyl-1H-pyrazole-5-carboxamide.
Parent API : Sildenafil
USD 114.00 / 5g
USD 171.00 / 10g
5-(2-Ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
CS-T-54350 > Impurities

Molecular Formula : C17H20N4O2   Molecular Weight: 312.37   CAS Number: 139756-21-1
Synonyms : UK 088800; “Imidazosagatriazinone”;5-(2-ethoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
Parent API : Sildenafil
USD 30.00 / 10mg
USD 46.00 / 25mg
USD 68.00 / 50mg
Propoxyphenyl Thiosildenafil
CS-T-40727 > Impurities

Molecular Formula : C23H32N6O3S2   Molecular Weight: 504.67   CAS Number: 479073-87-5
Synonyms : 5-(5-(((3R,5S)-3,5-dimethylpiperazin-1-yl)sulfonyl)-2-propoxyphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidine-7(6H)-thione
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Sildenafil Chlorosulfone
CS-O-08159 > Impurities

Molecular Formula : C17H19ClN4O4S   Molecular Weight: 410.88   CAS Number: 139756-22-2
Synonyms : 3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride
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Sildenafil Impurity A
CS-O-08160 > Impurities

Molecular Formula : C23H32N6O4S   Molecular Weight: 488.61   CAS Number: 1391053-95-4
Synonyms : Sildenafil Impurity A;5-(2-ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)phenyl)-3-isobutyl-1-methyl-1H-pyrazolo[4,3-d]pyrimidin-7(4H)-one;Sildenafil Isobutyl Analog ;
Parent API : Sildenafil
USD 274.00 / 10mg
USD 410.00 / 25mg
USD 616.00 / 50mg
Sildenafil-N-Oxide
CS-O-01446 > Impurities

Molecular Formula : C22H30N6O5S   Molecular Weight: 490.58   CAS Number: 1094598-75-0
Synonyms : Sildenafil-N-Oxide;Sildenafil Impurity B;4-((4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl)sulfonyl)-1-methylpiperazine 1-oxide
Parent API : Sildenafil
USD 274.00 / 10mg
USD 410.00 / 25mg
USD 616.00 / 50mg
Propoxyphenyl-thiohydroxyhomosildenafil
CS-T-40726 > Impurities

Molecular Formula : C24H34N6O4S2   Molecular Weight: 534.69   CAS Number: 479073-90-0
Synonyms : 1,6-dihydro-5-[5-[[4-(2-hydroxyethyl)-1-piperazinyl]sulfonyl]-2-propoxyphenyl]-1-methyl-3-propyl-7H-Pyrazolo[4,3-d]pyrimidine-7-thione
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Thiohomo Sildenafil
CS-T-44185 > Impurities

Molecular Formula : C23H32N6O3S2   Molecular Weight: 504.67   CAS Number: 479073-80-8
Synonyms : 5-(2-ethoxy-5-((4-ethylpiperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidine-7(4H)-thione
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Sildenafil Citrate Impurity 2
CS-O-14093 > Impurities

Molecular Formula : C14H20N2O4S   Molecular Weight: 312.39   CAS Number: 332374-42-2
Synonyms : Sildenafil Citrate Impurity 2;1-[(4-Ethoxy-3-formylphenyl)sulfonyl]-4-methylpiperazine
Parent API : Sildenafil
USD 274.00 / 10mg
USD 410.00 / 25mg
USD 616.00 / 50mg
Descarbonsildenafil
CS-T-15923 > Impurities

Molecular Formula : C21H30N6O4S   Molecular Weight: 462.57   CAS Number: 1393816-99-3
Synonyms : 3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-N-[2-(dimethylamino)ethyl]-4-ethoxy-benzenesulfonamide
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Benzyl Sildenafil
CS-P-00354 > Impurities

Molecular Formula : C28H34N6O4S   Molecular Weight: 550.68   CAS Number: 1446089-82-2  
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Propoxyphenyl Sildenafil
CS-P-00252 > Impurities

Molecular Weight: 488.61   CAS Number: 877777-10-1  
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Sildenafil Related Compound
CS-P-00253 > Impurities

Molecular Formula : C24H32N6OS2   Molecular Weight: 484.69   CAS Number: NA
Synonyms : 1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine
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Demethylpiperazinyl Desethyl Sildenafil Sulfonyl Chloride
CS-T-15207 > Impurities

Molecular Formula : C15H15ClN4O4S   Molecular Weight: 382.82   CAS Number: 139756-27-7
Synonyms : 3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5(4H)-ylidene)-4-oxocyclohexa-1,5-diene-1-sulfonyl chloride
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4-Amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide Hydrochloride
CS-T-03054 > Impurities

Molecular Formula : C8H15ClN4O   Molecular Weight: 218.68   CAS Number: 247584-10-7
Synonyms : 4-amino-1-methyl-3-propyl-1H-pyrazole-5-carboxamide hydrochloride;CS-P-00484
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Hydroxythiohomo Sildenafil
CS-K-00212 > Impurities

Molecular Formula : C23H32N6O4S2   Molecular Weight: 520.67   CAS Number: 479073-82-0
Synonyms : 5-(2-ethoxy-5-((4-(2-hydroxyethyl)piperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidine-7(4H)-thione; 5-[2-Ethoxy-5-[[4-(2-hydroxyethyl)-1-piperazinyl]sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidine-7-thione; 5-(2-ethoxy-5-(4-(2-hydroxyethyl)piperazin-1-ylsulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidine-7(6H)-thione; Hydroxythiohomosildenafil; Thiohydroxyhomosildenafil
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