Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 1077-28-7, Whether you call it alpha-Lipoic Acid, Alpha Lipoic Acid , Thioctic Acid , 1 -2-Dithiolane-3-valeric Acid or a-Liponic Acid you can be assured the alpha-Lipoic Acid products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.