999-30-4
ethyl 2-((ethoxycarbonyl)amino)acetate
+
87-13-8
乙氧基甲叉丙二酸二乙酯
→
57982-60-2
diethyl 5-hydroxypyrrole-2,4-dicarboxylate
65171-73-5
diethyl 3-hydroxy-1H-pyrrole-2,4-dicarboxylate