7-chloro-3-methyl-2H-pyrazolo[4,3-d]pyrimidine

3-甲基-4-硝基-1H-吡唑-5-羧酸

5-methyl-4-nitro-1(2)H-pyrazole-3-carboxylic acid amide

7-羟基-3-甲基吡唑并[4,3-d]嘧啶

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