2-Methoxybenzaldehyde is an organic compound with the formula CH<sub>3</sub>OC<sub>6</sub>H<sub>4</sub>CHO. It is also commonly referred to as o-anisaldehyde. As a methylated version of salicylaldehyde, the molecule consists of a benzene ring with adjacent formyl and a methoxy groups. It is a colorless solid with a pleasant aroma. The related isomer 4-anisaldehyde is better known, being a commercial flavorant. 2-Anisaldehyde is prepared commercially by formylation of anisole.
It is used to produce 25I-NBOMe.