16alpha,17,21-trihydroxypregna-1,4,9(11)-triene-3,20-dione 21-acetate , Above 98% / Summer 618 , 【77017-20-0】
Molecular Formula: C23H28O6
Formula Weight: 400.465
Erlotinib iMpurity , 0.99summer , 【183321-82-6】
Molecular Formula: C20H17Cl2N3O2
Formula Weight: 402.27
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