29263-94-3
2-溴-2-甲基丙二酸二乙酯
+
121-88-0
2-氨基-5-硝基苯酚
→
~95%
154365-36-3
ethyl 2-methyl-7-nitro-3-oxo-4H-1,4-benzoxazine-2-carboxylate