67-56-1
甲醇
+
62020-63-7
(9ci)-2,3-二氢-3-氧代-5-异噻唑羧酰胺
→
~66%
100241-89-2
methyl 3-oxo-1,2-thiazole-5-carboxylate
170953-74-9
Methyl-3-ethoxyisothiazole-5-carboxylate