Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 4345-03-3, Whether you call it Vitamin E Succinate, D-&#945, -Tocopheryl Acid Succinate, D-&#945 or -Tocopheryl Acid Succinate you can be assured the Vitamin E Succinate products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.