4-methyl-2-oxo-1,3,2-dioxathiane, 1,3-Butylene sulphite, 4-Methyltrimethylene sulfite, trans-4-methyl-r-2-oxo-1,3,2-dioxathiane, cis-4-methyl-r-2-oxo-1,3,2-dioxathiane, 1,3,2-Dioxathiane, 4-methyl-, 2-oxide, 4-methyltrimethylene sulphite, 1,3-butylene glycol sulfite, FDA 0477, EINECS 224-608-2