135420-33-6 2,4-Dimethyl-7-(1-oxo-2-phenyl-2-propenyl)-2H-1,4-benzoxazin-3(4H)-one 2H-1,4-Benzoxazin-3(4H)-one, 2,4-dimethyl-7-(1-oxo-2-phenyl-2-propenyl)- BRN 4327081