135420-35-8 2H-1,4-Benzoxazin-3(4H)-one, 7-(2-((acetyloxy)methyl)-1-oxo-2-propenyl)-2,2,4-trimethyl- 7-(2-((Acetyloxy)methyl)-1-oxo-2-propenyl)-2,2,4-trimethyl-2H-1,4-benzoxazin-3(4H)-one BRN 4328074