72030-87-6
5-(4-硝基苯基)噁唑-4-羧酸乙酯
→
~94%
950603-70-0
Ethyl 5-(4-aminophenyl)-1,3-oxazole-4-carboxylate
122-04-3
氯化对硝基苯甲酰
2999-46-4
异氰基乙酸乙酯