3-[2-(3,4-二甲氧基苯甲酰基)-4,5-二甲氧基苯基]戊-2-酮

10-acetyl-10-ethyl-2,3,6,7-tetramethoxy-anthrone

2-(3,4-dimethoxybenzoyl)-4,5-dimethoxybenzoic acid

2,3,6,7-tetramethoxyanthracene

9,10-bis-dichloromethylene-2,3,6,7-tetramethoxy-9,10-dihydro-anthracene