(+-)-2-n-Propyl-4-pentenoic acid (+-)-4-En-valproic acid 0-02-00-00452 (Beilstein Handbook Reference) 124815-86-7 1575-72-0 2-Allylpentanoic acid 2-Allylvaleric acid 2-Propyl-4-pentenoic acid 4-Pentenoic acid, 2-propyl- BRN 1704069 Pentanoic acid, 2-(2-propenyl)- R,S-4-en-VPA