4-(piperidin-1-ylmethyl)-1,4-benzoxazine-2,3-dione

4-[(4-phenylpiperazin-1-yl)methyl]-1,4-benzoxazine-2,3-dione

2-[3-(trifluoromethyl)phenyl]imino-4H-1,4-benzoxazin-3-one

2-(2-methoxy-4-nitrophenyl)imino-4H-1,4-benzoxazin-3-one