1-nitro-2-(2-nitrophenoxy)benzene

5-氨基-2-糠酸甲酯

methyl 5-(hydroxyamino)furan-2-carboxylate

4-(1-甲基乙基)-2-呋喃羧醛

5-羟基-2-苯并呋喃羧酸甲酯