Demeclocycline EP Impurity D

Chemical Name: (4R,4aS,12aS)-4-(dimethylamino)-3,10,11,12a-tetrahydroxy-1,12-dioxo-1,4,4a,5,12,12a-hexahydrotetracene-2-carboxamide (4-epianhydrodemethyltetracycline)

Smile: O=C(C1=C(O)[C@H](N(C)C)[C@@](CC2=CC3=CC=CC(O)=C3C(O)=C2C4=O)([H])[C@@]4(O)C1=O)N