Intermediate of API

Sildenafil impurity A

CasNo:1391053-95-4

Molecular Formula:C23H32N6O4S

Specifications:>95+%

Sildenafil impurity

CasNo:1971915-89-5

Molecular Formula:C19H24N4O5S

Specifications:>99%HPLC

Sildenafil Impurity 151

CasNo:1441-87-8

Molecular Formula:C7H5ClO2

Specifications:>95+%HPLC

4-(2-ethoxybenzamido)-3-isobutyl-1-methyl-1H-pyrazole-5-carboxamide

CasNo:1467610-62-3

Molecular Formula:C18H24N4O3

Specifications:>95+%

1H-Pyrazole-5-carboxamide, 4-[(2-methoxybenzoyl)amino]-1-methyl-3-propyl-

CasNo:856190-54-0

Molecular Formula:C16H20N4O3

Specifications:>98%HPLC

Sildenafil Impurity 23

CasNo:1797861-66-5

Molecular Formula:C17H21N3O4

Specifications:>98%HPLC

Thioaildenafil

CasNo:856190-47-1

Molecular Formula:C23H32N6O3S2

Specifications:>99%HPLC

Sildenafil impurity

CasNo:2580950-35-0

Molecular Formula:C17H20N4O2

Specifications:>99%HPLC

5-[5-[2-[(3R,5S)-3,5-dimethylpiperazin-1-yl]acetyl]-2-ethoxyphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-7-one

CasNo:1417999-76-8

Molecular Formula:C25H34N6O3

Specifications:>96%HPLC

Desmethyl Fondenafil

CasNo:147676-79-7

Molecular Formula:C23H30N6O3

Specifications:>96%HPLC

Sildenafil Impurity 30

CasNo:1333233-46-7

Molecular Formula:C23H30N6OS2

Specifications:>98%HPLC

dithiodesethylcarbodenafil

CasNo:1610830-81-3

Molecular Formula:C22H28N6OS2

Specifications:>95+%