Specifications: 5%, 20%, 50% HPLC Product characteristics a. Low ash, impurity, heavy metal, solvent Zeaxanthin 5%, 10%, 20%, 40%, 50% Usage:Zeaxanthin is one ... lowers the risk of cataract development.Also could act as a food additive. CAS number: 144-68-3 EINECS : 205-636 ... from: petals of Marigoldalso named Tagetes erecta Zeaxanthin 5%, 10%, 20%, 40%, 50%