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Ethylvanillin is the organic compound with the formula (C2H5O)(HO)C6H3CHO. This colorless solid consists of a benzene ring with hydroxyl, ethoxy, and formyl groups on the 4, 3, and 1 positions, respectively.
E 1665 (OTTO) Ethyl vanilin, 99% Cas 121-32-4 - used as an internal standard in the determination of phenolic compounds obtained from (alkaline) CuO-based oxidation of humic acid.