Methyl-4-ethoxy-3-(6,7-dihydro1-methyl-7-oxo-3-propyl-1Hpyrazolo[4,3-d]pyrimidin-5- yl)benzenesulfonate

API : Sildenafil Citrate

CAS NO : NA

IMPURUTY NAME : Sildenafil methyl sulfonate impurity

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