Methylhippuric acid is a carboxylic acid and organic compound.

Methylhippuric acid has three isomers.

The isomers include 2-, 3-, and 4-methylhippuric acid.

[1] Methylhippuric acids are metabolites of the isomers of xylene.

[1][2] The presence of methylhippuric acid can be used as a biomarker to determine exposure to xylene.