(4,5,6-triacetyloxy-9-oxoxanthen-3-yl) acetate

2,3,4,4'-四羟基二苯甲酮

N,N-diethyl-2,3,4-trimethoxybenzamide

(2-hydroxy-3,4-dimethoxyphenyl)-(2,4,6-trimethoxyphenyl)methanone

4,6-dimethoxy-2-hydroxy-2',3',4'-trimethoxybenzophenone