IUPAC Name: (2R)-2-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-4-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2H-furan-5-one
EC Number: 425-980-0
Molecular Weight: 338.26
Chemical Formula: C₁₂H₁₈O₁₁
CAS Number: 129499-78-1

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AA2G (CAS 129499-78-1), also known as L-ascorbic acid 2-glucoside, is a pharmaceutical-grade cosmetic active ingredient produced to USP and EP standards; the supplier does not manufacture it directly and does not offer free samples. Once converted to vitamin C within skin cells, it inhibits tyrosinase activity to reduce melanin formation and brighten skin tone, helps protect skin cells from UV-induced free-radical damage, and promotes collagen synthesis for anti-aging and wrinkle-reducing effects. It is sold into North America, Western and Eastern Europe, and Asia.