The molecule is a gamma-amino acid comprising that is GABA in which one of the hydrogens attached to the nitrogen is replaced by a methyl group. It derives from a butyric acid and a gamma-aminobutyric acid. It is a conjugate acid of a 4-(methylamino)butyrate. It is a tautomer of a 4-(methylamino)butyric acid zwitterion.
4-(methylamino)butanoic acid