3-methyl-2,4-dihydropyrazolo[4,3-d]pyrimidine-5,7-dione

ethyl 5-methyl-4-nitro-1H-pyrazole-3-carboxylate

5-甲基-4-溴-1H-吡唑-3-羧酸

7-氨基-3-甲基吡唑并[4,3-d]嘧啶

N,5-dimethyl-4-nitro-1H-pyrazole-3-carboxamide