Category
Chemical Primary Standard
CAS Number
120-14-9
Molecular Formula
C9H10O3
Molecular Weight
166.2 g/mol
Synonym

3,4-Dimethoxybenzenecarbonal; 4-O-Methylvanillin; Methylvanillin; Protocatechualdehyde Dimethyl Ether; Protocatechuic Aldehyde Dimethyl Ether;

Keywords
Miscellaneous compounds
Slide_1

3,4-Dimethoxybenzaldehyde is an aromatic aldehyde in which a benzene ring is substituted with methoxy groups (–OCH₃) at the 3- and 4-positions and an aldehyde group (–CHO) at the 1-position. It is widely used as an intermediate in organic synthesis, fragrances, and pharmaceutical compounds.