4-氨基苯乙酸

乙基6-甲氧基-3,4-二氢-2H-1,4-苯并恶嗪-2-羧酸酯

6-Methoxy-2H-1,4-benzoxazine-2,3(4H)-dione

2-氯-5-甲氧基-1,3-苯并恶唑

6-methoxy-2-methyl-4H-1,4-benzoxazin-3-one