3-溴-2-羟基-5-甲基苯甲醛

托特罗定

2-羟基-5-甲基苯甲酮

6-[(2-hydroxyanilino)methylidene]-4-methylcyclohexa-2,4-dien-1-one

6-(1,3-dihydrobenzimidazol-2-ylidene)-4-methylcyclohexa-2,4-dien-1-one