(3,4,5-Trimethoxy)acetophenone 1-(3,4,5-TRIMETHOXYPHENYL)ETHANONE 1136-86-3 3',4',5'-Trimethoxyacetophenone EINECS 214-501-9 Ethanone, 1-(3,4,5-trimethoxyphenyl)- (9CI) NSC 30099