5334-38-3
3-甲基-4-硝基-1H-吡唑-5-羧酸
+
7664-93-9
硫酸
→
~91%
28668-07-7
ethyl 5-methyl-4-nitro-1H-pyrazole-3-carboxylate
402-61-9
5-甲基-1H-吡唑-3-羧酸