White to pale yellow powder or crystals with a characteristic odor of vanilla.
Ethyl vanillin is a synthetic compound that is 3½ times stronger in flavor than real vanilla, although the flavor is not quite the same.
It is used as a substitute for vanilla in foods and perfumes, because it is less expensive and keeps better in storage and transport.
It is closely related to the slightly smaller molecule methyl vanillin.
ethyl vanillin: InChI=1/C9H10O3/c1-2-12-9-5-7(6-10)3-4-8(9)11/h3-6,11H,2H2,1H3