4-hydroxy-1,4-benzoxazine-2,3-dione

2-Bromo-4-hydroxy-2H-1,4-benzoxazin-3(4H)-one

ethyl 2-(2-nitrophenoxy)acetate

methyl α-(2-nitrophenoxy)-α-methoxyacetate

4-羟基-2H-1,4-苯并噁嗪-3(4h)-酮