288-13-1
吡唑
+
541-41-3
氯甲酸乙酯
→
~57%
10199-59-4
ethyl pyrazole-1-carboxylate
57489-89-1
(ethoxycarbonyl)(pyrazin-1-ium-1-yl)amide
~48%
290-37-9
吡嗪