(2R)-6-(acetyloxy)-3,4-dihydro-2,8-dimethyl-7-(methyl-d3)-2-[(4R,8R)-4,8,12-trimethyltridecyl]-2H-1-Benzopyran-5-carboxaldehyde-d4 is an intermediate in synthesizing γ-Tocopherol-d4 (T526142), a labelled γ-Tocopherol. One of the naturally occurring forms of Vitamin E. Most abundant Tocopherol in soybean and corn oils.