9-Carboxy Doxorubicin Impurity

Chemical Name: (2S,4S)-4-(((2R,4S,5S,6S)-4-amino-5-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-2,5,12-trihydroxy-7-methoxy-6,11-dioxo-1,2,3,4,6,11-hexahydrotetracene-2-carboxylic acid

Smile: OC1=C(C(C2=CC=CC(OC)=C32)=O)C(C3=O)=C(O)C4=C1C[C@](C(O)=O)(O)C[C@@H]4O[C@@H](C[C@H](N)[C@@H]5O)O[C@H]5C