Atraric acid is a naturally occurring phenolic compound and ester with the IUPAC name methyl 2,4-dihydroxy-3,6-dimethylbenzoate and molecular formula C<sub>10</sub>H<sub>12</sub>O<sub>4</sub>. It occurs in the root-bark of Pygeum africanum and Evernia prunastri (Oakmoss). There is evidence to suggest that it has antiandrogenic activity in humans and its use in treatment of benign prostate hyperplasia, prostate cancer, and spinal and bulbar muscular atrophy has been investigated.