γ-Aminobutyric acid (Standard) is the analytical standard of γ-Aminobutyric acid. This product is intended for research and analytical applications. γ-Aminobutyric acid (4-Aminobutyric acid) is a major inhibitory neurotransmitter in the adult mammalian brain, binding to the ionotropic GABA receptors (GABA_A receptors) and metabotropic receptors (GABA_B receptors. γ-Aminobutyric acid shows calming effect by blocking specific signals of central nervous system^[1][2].