4-(4,5-diphenyl-1,3-dihydroimidazol-2-ylidene)-3-hydroxycyclohexa-2,5-dien-1-one

(4E)-4-[[2-(1,3-benzothiazol-2-yl)hydrazinyl]methylidene]-3-hydroxycyclohexa-2,5-dien-1-one

4-(乙酰基氧基)-2-羟基苯甲醛

(2,4-二羟基苯基)(4-甲氧基苯基)甲酮

7-hydroxy-6-methylchromen-2-one