Hippuric acid is an endogenous metabolite and analytical reagent available as a solid or as a ready-to-use 10 mM solution in DMSO (1 mL). It is suitable for metabolite research, analytical standards, and in vitro biochemical assays. Chemical identifiers include CAS 495-69-2, formula C9H9NO3, and molecular weight 179.18 g/mol. Storage recommendations vary by form and solvent.