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Arbutin is a glycoside; a glycosylated hydroquinone extracted from the bearberry plant in the genus Arctostaphylos among many other medicinal plants, primarily in the family Ericaceae.
A 2581 (OTTO) Arbutin, 98% Cas 497-76-7 - used in studies on melanin biosynthesis and as an inhibitor to identify, differentiate and characterize tyrosinase(s).