1,4-Dihydro-4-phenyl-2H-3,1-benzoxazin-2-one 13260-76-9 2H-3,1-Benzoxazin-2-one, 1,4-dihydro-4-phenyl- 4-Phenyl-1,4-dihydro-2H-3,1-benzoxazin-2-one BRN 1214962