(E/Z)-2-Propyl-2-pentenoic Acid Methyl Ester-d3 is the isotope labelled analog of (E/Z)-2-Propyl-2-pentenoic Acid Methyl Ester (P838415); the methyl ester derivative of (E,Z)-2-Propyl-2-pentenoic Acid (P838300) which is a metabolite of Valproic Acid (V094750).