(3S-cis)-3,6-Dimethyl-1,4-dioxane-2,5-dione 1,4-Dioxane-2,5-dione, 3,6-dimethyl-, (3S,6S)- 13167-47-0 17699-81-9 22061-81-0 25151-34-2 4511-42-6 EINECS 224-832-0