7-[2-(ethylsulfanylmethyl)butanoyl]-4-methyl-1,4-benzoxazin-3-one

7-butanoyl-4-methyl-1,4-benzoxazin-3-one

7-butanoyl-2,2,4-trimethyl-1,4-benzoxazin-3-one

2,4-二甲基-7-(2-亚甲基-1-氧代丁基)-2H-1,4-苯并恶嗪-3(4H)-酮

1-[3-hydroxy-4-(methylamino)phenyl]butan-1-one