2-(1-Methylethyl)-5-[(1Z)-2-phenylethenyl]-1,3-benzenediol is a reagent used in the synthesis of Benvitimod impurity. Also, it is derived from 3,5-Dihydroxybenzoic Acid (D451700), which is a metabolite of alkylresorcinol in human urine and plasma. 3,5-Dihydroxybenzoic Acid is also used a biomarker of whole grain wheat and rye.