(+)-2-Amino-3-methylbutyric Acid; (2S)-2-Amino-3-methylbutanoic Acid; (S)-2-Amino-3-methylbutanoic Acid; (S)-Valine;(S)-α-Amino-β-methylbutyric Acid; L-(+)-α-Aminoisovaleric Acid; L-α-Amino-β-methylbutyric Acid; l-Valine;