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    Bromnaltrexone Impurity A

    CAS NO. 1027638-96-5
    Molecular formula C21H24NO4Br
    Molecular weight 434.33
    Specification Enterprise Standard
    Structural formula
    Remark This product is a standard for chromatographic peak positioning in the US Pharmacopoeia, and bromine naltrexone contains 0.1% bromine naltrexone impurity A:
    (17RS)-17-(Cyclopropylmethyl)-4,5α-epoxy-3,14-dihydroxy-17-methyl-6-oxomorphinan-7-enium bromide

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