15803-27-7
3,4-二甲基-1H-吡唑-5-羧酸乙酯
+
74-88-4
甲基碘
→
~54%
89202-91-5
ethyl 1,4,5-trimethylpyrazole-3-carboxylate
89202-90-4
ethyl 2,4,5-trimethylpyrazole-3-carboxylate