The molecule is the R-enantiomer of 2-hydroxy-3-methylbutyric acid. It derives from a D-valine. It is a conjugate acid of a (R)-2-hydroxy-3-methylbutyrate. It is an enantiomer of a (S)-2-hydroxy-3-methylbutyric acid.
(2R)-2-hydroxy-3-methylbutanoic acid