2-(4H-2,3-Dihydro-1,4-benzoxazin-3-one-4-ylmethyl)morpholine hydrogen oxalate 2H-1,4-Benzoxazin-3(4H)-one, 4-(2-morpholinylmethyl)-, ethanedioate (1:1) 4-(2-Morpholinylmethyl)-2H-1,4-benzoxazin-3(4H)-one ethanedioate (1:1) 57245-68-8