ethyl 2-(2-nitrophenoxy)acetate

2-(2-chloro-acetylamino)-4-methoxy-phenol

4-acetoxy-(2H)-1,4-benzoxazin-3(4H)-one

4-羟基-2H-1,4-苯并噁嗪-3(4h)-酮

(3-oxo-4H-1,4-benzoxazin-6-yl) acetate