140158-50-5 2-Amino-3-(3-hydroxy-5-tert-butylisoxazol-4-yl)propionic acid 4-Isoxazolepropanoic acid, alpha-amino-5-(1,1-dimethylethyl)-2,3-dihydro-3-oxo- Atpa-tert alpha-Amino-3-hydroxy-5-tert-butyl-4-isoxazolepropionate alpha-Amino-5-(1,1-dimethylethyl)-2,3-dihydro-3-oxo-4-isoxazolepropanoic acid