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ethylvanillin

n. (context organic chemistry English) A compound with chemical formula (C2H5O)(HO)C6H3CHO.

Wikipedia
Ethylvanillin

Ethylvanillin is the organic compound with the formula (CHO)(HO)CHCHO. This colorless solid consists of a benzene ring with hydroxyl, ethoxy, and formyl groups on the 4, 3, and 1 positions, respectively.