Basic Info. Raw Material:Plants Trademark:Qingdao Header Origin:Qingdao Product Name: Alpha Lipoic Acid (Thioctic Acid - USP GRADE) Molecular Formula: C8H14O2S2 Molecular Weight: 206.33 ITEMS SPECIFICATIONS RESULTS Appearance Slightly yellow crystal powder,almost odorless Conforms Identification The retention time of the peak for alpha lipoic acid in the chromatogram of the assay preparation corresponds to that in the chromatogram of the standard preparation as obtained in the Assay Conforms Melting Point 60C ~ 62C 62C Heavy Metals 10ppm Max.
http://www.nspharmaceutical.com/sap-extract/