Product Details  Zeaxanthin, C40H56O2 CAS No.144-68-3 Zeaxanthin, CAS No.144-68-3, extracted from Marigold. Beatlet or powder available. For example: 40% powder Items Specifications Test Results Appearance Redish fine powder Complied Assay(HPLC) 40%min 40.17% Odor Characteristic Complied Residue on lgnition ≤5.0% 1.37% Loss on Drying ≤5.0% 0.52% Extract Solvent Ethanol & Water Complied Heavy Metal 10ppm Complied AS 2ppm Complied Residual Solvents Eur.Pharm.5 Complied Total Plate Count 1000cfu/g Complied Yeast &Mold 100cfu/g Complied E.Coli Negative Negative Salmonella Negative Negative