The molecule is an amino acid zwitterion resulting from a transfer of a proton from the carboxy group to the amino group of L-alloisoleucine; major species at pH 7.3. It is an enantiomer of a D-alloisoleucine zwitterion. It is a tautomer of a L-alloisoleucine.
(2S,3R)-2-azaniumyl-3-methylpentanoate