M-Toluic acid

m-Toluic acid, (IUPAC: 3-methylbenzoic acid), is an aromatic carboxylic acid, with formula (CH3)C6H4(COOH). It is an isomer of p-toluic acid and o-toluic acid.

It serves, among other purposes, as a precursor to DEET (N,N diethyl-m-toluamide) the well-known insect repellant.