... NO: 497-76-7 3,Chemical formula: C12H16O7 4,Specification:98%(HPLC) specification:arbutin CAS No.: 497-76-7 arbutin 98% HPLC ... such as postinflammatory hyperpigmentation caused by acne ,trauma,allergic reaction,in fections,injuries,phototoxic reactions,reactions to medications, reactions to cosmetics ... ,Parmaceutical2,Cosmetic raw materials, food emulsifier Alpha-Arbutin power used in cosmetic field