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GABA
γ-aminobutyric acid is a compound with the chemical formula C₄H₉NO₂, also known as 4-aminobutyric acid (GABA). It is an amino acid that widely exists in vertebrates, plants and microorganisms. Gamma-aminobutyric acid (GABA) is an important central nervous system inhibitory neurotransmitter with good water solubility and thermal stability.