4-oxo-3,4-dihydro-(1H)-2,3-benzoxazine

3,4-dihydro-1H-benzo[d][1,2]oxazine

1,4-dihydro-benzo[d][1,2]oxazine-3-carboxylic acid ethyl ester

1,2-二(溴甲基)苯

甲醛