1-苄基哌嗪-2-羧酸乙酯

6-甲基-3,4-二氢-2H-1,4-苯并噁嗪-2-羧酸乙酯

3,4-二氢-2H-苯并[1,4]噁嗪-2-羧酸乙酯

ethyl 3,4-dihydro-2H-benzo [b][1,4]oxazine-3-carboxylate

9-benzyl-1,3-dimethylpurino[7,8-a]pyrimidine-2,4,8-trione