3,4-二甲基-5-吡唑啉酮

3-(溴甲基)-2,6,7-三甲基-1H,5H-吡唑并[1,2-a]吡唑-1,5-二酮

2-chloro-3,5,6-trimethyl-1H,7H-pyrazolo[1,2-a]pyrazole-1,7-dione

2-chloro-3,6,7-trimethyl-1H,5H-pyrazolo[1,2-a]pyrazole-1,5-dione

2,6-dichloro-1,7-dimethylpyrazolo[1,2-a]pyrazole-3,5-dione