4-硝基-1-苯基-1H-吡唑-3-羧酸甲酯

1-乙基-4-硝基-1H-吡唑-5-羧酸甲酯

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

4-氨基-1-乙基-1H-吡唑-3-羧酸甲酯

methyl 2-(2-ethoxy-2-oxoethyl)-4-nitropyrazole-3-carboxylate