141-97-9
乙酰乙酸乙酯
+
105-34-0
氰乙酸甲酯
→
~79%
77457-04-6
2-O-ethyl 4-O-methyl 5-amino-3-methylthiophene-2,4-dicarboxylate
67-56-1
甲醇
372-09-8
氰乙酸
~47%