Category
Chemical Primary Standard
CAS Number
118-41-2
Molecular Formula
C10H12O5
Molecular Weight
212.2 g/mol
Synonym

Gallic Acid Trimethyl Ether; Trimethylgallic Acid; Eudesmic Acid; NSC 2525; Tri-O-methylgallic Acid; Trimebutine - Impurity B; Trimethoprim EP Impurity J

Keywords
Aromatics
Metabolites.
Impurities
slide.1

3,4,5-Trimethoxybenzoic acid is an aromatic carboxylic acid with the molecular formula C₁₀H₁₂O₅. It consists of a benzoic acid core substituted with three methoxy groups (–OCH₃) at the 3, 4, and 5 positions of the benzene ring. It is commonly used as an intermediate in the synthesis of pharmaceuticals, agrochemicals, and fine chemicals, and it appears as a white to off-white crystalline solid.