Synonyms: Ethylvanillin, Benzaldehyde, 3-ethoxy-4-hydroxy-, 3-Ethoxy-4-hydroxybenzaldehyde, 2-Ethoxy-4-formylphenol, 3-Ethylvanillin, 4-Hydroxy-3-ethoxybenzaldehyde, Arovanillon, Bourbonal, Ethavan, Ethovan, Ethylprotal, Ethyl vanillin, Ethylvanillin, NSC 1803, NSC 67240, Protocatechuic aldehyde ethyl ether, Quantrovanil, Rhodiarome, Vanillal, Vanirom