Minocycline EP Impurity A

Chemical Name: 4-Epi Minocycline ; (4R,4aS,5aR,12aS)-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide

Smile: OC1=C(C(N)=O)C([C@]2(O)[C@@]([C@H]1N(C)C)([H])C[C@](C3=C2O)([H])CC4=C(N(C)C)C=CC(O)=C4C3=O)=O