2,3-Dihydro-2-methyl-4H-1,3-benzoxazin-4-one 2-Methyl-2H-1,3-benzoxazin-4(3H)-one 20602-57-7 2H-1,3-Benzoxazin-4(3H)-one, 2-methyl- 4-27-00-02753 (Beilstein Handbook Reference) 4H-1,3-BENZOXAZIN-4-ONE, 2,3-DIHYDRO-2-METHYL- A 309 AI3-16849 BRN 0140346 NSC 25126