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  • Sildenafil EP Impurity B

    Structure of Sildenafil EP Impurity B available at pharmACE Research Laboratory(www.pharmaceresearch.com)

    Product Features

    CAS 1094598-75-0
    IUPAC  5-[2-Ethoxy-5-[(4-methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one
    Molecular Formula  C₂₂H₃₀N₆O₅S
    Molecular Weight  490.58
    Synonyms  Sildenafil N-Oxide