5-methyl-2-(4-nitrophenyl)pyrazole-3,4-dione

(5-chloro-3-methyl-1-phenylpyrazol-4-yl)-phenylmethanone

N-去甲基异丙安替比林

(4E)-5-甲基-4-(3-甲基-5-氧代-1-苯基-吡唑-4-亚基)-2-苯基-吡唑-3-酮

3-methyl-1,6-diphenylpyrano[2,3-c]pyrazol-4-one