56536-52-8
5-chloro-2-furan-2-yl-pyrimidine-4-carboxylic acid
→
56536-53-9
5-chloro-2-(furan-2-yl)pyrimidine
36437-19-1
2-氯马来醛
+
54610-69-4
2-呋喃羧酰胺盐酸盐