Drospirenone EP Impurity B

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Chemical Name : 7β-(hydroxymethyl)-3-oxo-15α,16α-dihydro-3′H-cyclopropa[15,16]-17α-pregn-4-ene-21,17-carbolactone (7β-hydroxymethyl derivative),

Smiles : O=C1CC[C@@]2(C)C(C[C@H](CO)[C@]3([H])[C@]2([H])CC[C@@]4(C)[C@@]3([H])[C@]([H])(C5)[C@@]5([H])[C@]46OC(CC6)=O)=C1

Synonym : 7-(4-bromobenzoyl)-3-(methylthio)indolin-2-one

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