Intermediate of API

Sildenafil Impurity 25 

CasNo:2021224-02-0

Molecular Formula:C9H10O6S

Specifications:>99%HPLC

5-Chlorosulfonyl-2-hydroxybenzoic acid

CasNo:17243-13-9

Molecular Formula:C7H5ClO5S

Specifications:>95+%

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-(5-chloro-2-ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl-

CasNo:1829588-57-9

Molecular Formula:C17H19ClN4O2

Specifications:>95+%

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

CasNo:139756-10-8

Molecular Formula:C16H20N4O3

Specifications:>95+%HPLC

Propoxyphenyl HoMohydroxysildenafil

CasNo:139755-87-6

Molecular Formula:C24H34N6O5S

Specifications:>95+%

Piperiacetildenafil

CasNo:147676-50-4

Molecular Formula:C24H31N5O3

Specifications:>95+%

1,3-DIMETHYL-4-NITRO-1H-PYRAZOLE-5-CARBOXAMIDE

CasNo:78208-58-9

Molecular Formula:C6H8N4O3

Specifications:>98%HPLC

ethyl 5-chloro-2-ethoxybenzoate

CasNo:73119-79-6

Molecular Formula:C11H13ClO3

Specifications:>95+%HPLC

1H-Pyrazole-5-carboxamide, 4-[[2-hydroxy-5-[(4-methyl-1-piperazinyl)sulfonyl]benzoyl]amino]-1-methyl-3-propyl-

CasNo:960009-36-3

Molecular Formula:C20H28N6O5S

Specifications:>96%HPLC

3-ethyl-1-methyl-4-nitro-1H-pyrazole-5-carboxamide

CasNo:247583-67-1

Molecular Formula:C7H10N4O3

Specifications:>97%HPLC

Hydroxy Chlorodenafil

CasNo:1391054-00-4

Molecular Formula:C19H23ClN4O3

Specifications:>95+%

Hydroxythiohomosildenafil

CasNo:479073-82-0

Molecular Formula:C23H32N6O4S2

Specifications:>95+%