2,10-Dihydroxy-5-(4-hydroxy-2-methoxyphenyl)-6-((4-hydroxy-3-methoxyphenyl)methyl)-1,3-dimethoxy-9H-benzo(a)xanthen-9-one 51033-46-6 9H-Benzo(a)xanthen-9-one, 2,10-dihydroxy-5-(4-hydroxy-2-methoxyphenyl)-6-((4-hydroxy-3-methoxyphenyl)methyl)-1,3-dimethoxy- EINECS 256-926-2 Santalin B