二苯甲酮

1-(5-methyl-2,2-diphenyl-3H-furan-4-yl)ethanone

4-acetyl-3-methyl-6,6-diphenyl-1,2-dioxan-3-ol

1-苯基-1,4-戊二酮

4,4'-二甲基二苯甲酮