4-甲基苯甲酰苯胺

(9CI)-1,4-二氢-4-甲基吡啶并[2,3-b]吡嗪-2,3-二酮

tert-butyl N-(6-oxohexyl)carbamate

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

7-methoxy-4H-1,4-benzoxazine-2,3-dione