88426-19-1
→
~97%
88426-21-5
12-hydroxy-5,7-dimethoxy-3,4-dihydro-1H-tetracene-2,6,11-trione
59325-97-2
5,12-dihydroxy-7-methoxy-3,4-dihydro-1H-tetracene-2,6,11-trione