(.+-.)-.beta.-Aminobutyric acid 2835-82-7 Butanoic acid, 3-amino-, (.+-.)- Butyric acid, 3-amino-, (.+-.)- Butyric acid, 3-amino-, DL- DL-.beta.-Aminobutyrate DL-.beta.-Aminobutyric acid DL-3-Aminobutyric acid NSC77380