Synonyms: Acetophenone,2,3,4,5,6-pentamethyl- (4CI); Acetophenone, 2',3',4',5',6'-pentamethyl-(6CI,7CI,8CI); Ethanone, 1-(pentamethylphenyl)- (9CI);2,3,4,5,6-Pentamethylacetophenone; 2',3',4',5',6'-Pentamethylacetophenone;Acetylpentamethylbenzene; Methyl 2,3,4,5,6-pentamethylphenyl ketone