Intermediate of API

Sildenafil Impurity IV-1

CasNo:1308332-48-0

Molecular Formula:C13H18N2O5S

Specifications:>95+%HPLC

1-methyl-3-(2-methylpropyl)-4-nitro-1H-pyrazole-5-carboxamide

CasNo:911715-34-9

Molecular Formula:C9H14N4O3

Specifications:>95+%HPLC

Sildenafil Impurity 80

CasNo:200575-15-1

Molecular Formula:C22H32N6O5S

Specifications:>99%HPLC

Sildenafil Impurity 12

CasNo:268204-00-8

Molecular Formula:C9H16N4O

Specifications:>95+%HPLC

Sildenafil CarboxaMide IMpurity

CasNo:139756-03-9

Molecular Formula:C17H22N4O3

Specifications:>99%HPLC

Benzenesulfonamide, 3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-N-[2-(ethylamino)ethyl]-

CasNo:2196257-93-7

Molecular Formula:C21H30N6O4S

Specifications:>95+%HPLC

Descarbon Sildenafil

CasNo:466684-88-8

Molecular Formula:C20H28N6O4S

Specifications:>95+%

Sildenafil impurity

CasNo:2512206-40-3

Molecular Formula:C18H22N4O5S

Specifications:>95+%HPLC

Norneosildenafil

CasNo:371959-09-0

Molecular Formula:C22H29N5O4S

Specifications:>98%HPLC

1-METHYL-3-(2-METHYLPROPYL)-1H-PYRAZOLE-5-CARBOXYLIC ACID

CasNo:769132-77-6

Molecular Formula:C9H14N2O2

Specifications:>95+%

4-Nitro-5-propyl-1H-pyrazole-3-carboxamide

CasNo:139756-08-4

Molecular Formula:C7H10N4O3

Specifications:>95+%HPLC

Sildenafil DiMer IMpurity

CasNo:1346602-67-2

Molecular Formula:C38H46N10O8S2

Specifications:>99%HPLC