141807-51-4
3-(cyanomethylidene)pentanedioic acid
→
141807-52-5
6-溴-1,2-二氢-2-氧代-4-吡啶乙酸甲酯
67-56-1
甲醇
+
1830-54-2
1,3-丙酮二羧酸二甲酯
1709-25-7
dimethyl 3-(cyanomethylidene)pentanedioate