2-Ethyl-2-hydroxybutanoic acid (2-Ethyl-2-hydroxybutyric acid) is a hydroxy fatty acid. 2-Ethyl-2-hydroxybutanoic is a metabolite of DEHP (HY-B1945)[1].
2-Propyl-2-pentenoic acid is a metabolite of Valproic acid (HY-10585). 2-Propyl-2-pentenoic acid has a facilitating action on the acquisition of conditioned behavior with negative reinforcement in mice[1].