1H-????[4,3-d]????,3-(2-?????)-

1H-????[4,3-d]????,3-(2-?????)- ??? ???

???(??):: Sildenafil PyriMidine IMpurity;Isobutylpyrazolopyrimidine Impurity;Sildenafil Isobutylpyrazolopyrimidine Impurity;3-(2-Methylpropyl)-1H-pyrazolo[4,3-d]pyrimidine;3-(2-methylpropyl)-2H-pyrazolo[4,3-d]pyrimidine;1H-Pyrazolo[4,3-d]pyriMidine, 3-(2-Methylpropyl)-

?? ?? 10

1H-????[4,3-d]????,3-(2-?????)- ??

Sildenafil Citrate (S435000) impurity.

???( 10)?? ??

???	??	???	??	?? ?	??
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Desmethyl Fondenafil Desethyl Carbodenafil 2-Ethoxybenzoyl chloride N-Des[2-(1-methyl-2-pyrrolidinyl)ethyl] Udenafil 5-DIMETHOXYMETHYL-BENZO[1,3]DIOXOLE 5-(2-ETHOXYPHENYL)-1-METHYL-3-N-PROPYL-1,6-DIHYDRO-7H-PYRAZOLO[4,3-D]-7-PYRIMIDINONE 1-Methyl-4-nitro-3-propyl-(1H)-pyrazole-5-carboxamide Propoxyphenyl ThiohoMosidenafil 1-METHYL-4-NITRO-3-PROPYL-1H-PYRAZOLE-5-CARBOXYLIC ACID 5-chloro-2-ethoxybenzoyl chloride 4-(2-Ethoxy benzamido)-1-methyl-3-n-propyl pyrazole-5-carboxamide. Sildenafil Chlorosulfonyl Sulfosalicylic acid Sildenafil Impurity F 5-chloro-2-ethoxybenzoic acid KF31327 5-CHLOROSULFONYL-2-ETHOXYBENZOIC ACID 2-ETHOXY-5-[(4-METHYLPIPERAZIN-1-YL)SULFONYL]BENZOIC ACID