2',4'-Dimethoxyacetophenone4-Acetylresorcinol dimethyl ether1-(2,4-Dimethoxyphenyl)ethan-1-one2,4-二甲氧基乙酰苯Resacetophenone dimethyl ether2′,4′-二甲氧基苯乙酮1-(2,4-dimethoxyphenyl)ethanone2',4'-Dimethoxyacetophenone2',4'-二甲氧基苯乙酮2′,4′-Dimethoxyacetophenone2,4-DIMETHOXYACETOPHENONE