2-Amino-3-methylbutanoic acid 2-Amino-3-methylbutyric acid 72-18-4 Butanoic acid, 2-amino-3-methyl- Butanoic acid, 2-amino-3-methyl-, (S)- L-(+)-.alpha.-Aminoisovaleric acid L-Valine NSC76038 VALINE, (L) Valine Valine, L- WLN: QVYZY1&1 WLN: QVYZY1&1 -L