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Ethyl vanillin is an analogue (homologue) of vanillin, in which at position 3 the methoxy group is replaced by an ethoxy group. The synthesis of ethyl vanillin is similar to the synthesis of vanillin from guaiacol (pyrocatechol monomethyl ether), monoethyl pyrocatechol ether is used as the starting material:
Ethyl vanillin is used as a flavoring, mainly in the confectionery industry, its smell is ≈3 times stronger than that of vanillin.
