(2S)-2-amino-3-(5-oxo-1,2-oxazol-2-yl)propanoic acid (2S)-2-amino-3-(5-oxoisoxazol-2-yl)propanoic acid (2S)-2-amino-3-(5-oxo-2-isoxazolyl)propanoic acid (2S)-2-amino-3-(5-ketoisoxazol-2-yl)propionic acid 59476-61-8 (Isoxazolin-5-on-2-yl)alanine (S)-alpha-Amino-5-oxo-2(5H)-isoxazolepropanoic acid 2(5H)-Isoxazolepropanoic acid, alpha-amino-5-oxo-, (S)- BIOYA beta-(Isoxazolin-5-on-2-yl)alanine