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Ascorbyl stearate

L-Ascorbic acid, 6-octadecanoate  Ascorbyl monooctadecanoate

Molecular formula C₂₄H₄₂O₇

Molar mass 442.586 g/mol

CAS number [10605-09-1]

Ascorbyl stearate (C₂₄H₄₂O₇) is an ester formed from ascorbic acid and stearic acid. In addition to its use as a source of vitamin C, it is used as an antioxidant food additive in margarine (E number E305). The USDA limits its use to 0.02% individually or in conjunction with other antioxidants.