Endogenous inhibitory neurotransmitter.
White microcrystalline powder
Crystallise GABA from aqueous EtOH or MeOH/Et2O. Also crystallise it by dissolving it in the least volume of H2O and adding 5-7 volumes of absolute EtOH. [Sherman Biochemical Preparations 4 91 1955, de Witt Org Synth Coll Vol II 25 1943, Beilstein 4 III 1316, 4 IV 2600.]
An important inhibitory neurotransmitter. The foods contain γ-aminobutyric acid (GABA) at an amount that shows immediate effect of suppressing autonomic nerve activity related to blood pressure increase. Reacts with isothiocyanates to produce thioureas which have antifungal activity.