89488-06-2
6-氨基-5-硝基-3-吡啶羧酸
→
90765-07-4
ethyl 6-amino-5-nitropyridine-3-carboxylate
64-17-5
乙醇
+
219762-81-9
ethyl 5,6-diaminopyridine-3-carboxylate