The chemical Gamma-aminobutyric acid has a known molecular formula of C4-H9-N-O2. Synonyms may include: Acide amino-4- butyrique [French], AI3-26812, Aminalon, gamma-Aminobutanoic acid, 4-Aminobutanoic acid, gamma-Aminobuttersaeure [German], gamma-Aminobutyric acid, gamma-Amino-n-butyric acid, 4-Aminobutyric acid, CCRIS 3721, DF 468, EINECS 200-258-6 (ChemID).