5-甲氧甲酰基-1-甲基-3-羧酸吡唑

methyl 4-oxo-5,6,7,8-tetrahydropyrazolo[1,5-a][1,4]diazepine-2-carboxylate

1-(2-溴乙基)-1H-吡唑-3,5-二羧酸二甲酯

4-氯吡唑

5-(氯羰基)-1-甲基-1H-吡唑-3-羧酸甲酯