五甲苯胺

4-amino-2,3,5,6-tetramethylbenzaldehyde

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

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

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