Botanical Source: MARlGOLD FLOWER Appearance: Orange fine powder or slurry ¨C yellow brown liquid Active Ingredients: Lutein Specification: 10-90% (HPLC) Molecular formula: C40H56O2 Molecular weight: 568.85 Molecular structureŁş Action and Uses: Protect eyes from the ultraviolet radiation radiated from the sunlight and computer etc. Package: 25 Kg/ fiberboard drum Storage: Store in cool & dry area, keep away from the direct light and heat. Shelf life: Two years if properly stored