2,3,4,5-tetramethylbenzoic acid

2,3,4,5,6-五甲基苯甲酸

五甲苯胺

2,3,4,4,6-pentamethyl-5-nitrocyclohexa-2,5-dien-1-one

2-chloro-1-(2,3,4,5,6-pentamethylphenyl)ethanone