(E)-(+-)-7-(3-(4-Hydroxyphenyl)-1-oxo-2-propenyl)-2,4-dimethyl-2H-1,4-benzoxazin-3(4H)-one 123172-63-4 2H-1,4-Benzoxazin-3(4H)-one, 7-(3-(4-hydroxyphenyl)-1-oxo-2-propenyl)-2,4-dimethyl-, (E)-(+-)- BRN 5989931