39204-49-4
2-甲氨基吡嗪盐酸盐
+
4755-77-5
草酰氯单乙酯
→
55316-36-4
ethyl 2-oxo-2-(pyrazin-2-ylmethylamino)acetate
55316-47-7
Imidazo[1,5-a]pyrazine-3-carboxylic acid, ethyl ester