β-Aminobutyric acid (BABA) is an isomer of the amino acid aminobutyric acid with the chemical formula C4H9NO2. It has two isomers, alpha-aminobutyric acid and gamma-aminobutyric acid (GABA), a neurotransmitter in animals that is also found in plants, where it may play a role in signalling. All three are non-proteinogenic amino acids, not being found in proteins. BABA is known for its ability to induce plant disease resistance, as well as increased resistance to abiotic stresses, when applied to plants.

CAS：3775-73-3
中文别名：R-3-氨基丁酸;D-β-Homoalanine;
英文别名：Butanoic acid, 3-amino-, (R)-;(3R)-3-aminobutanoic acid;(R)-3-Aminobutyric acid;
分子式：C4H9NO2
分子量：103.12
精确质量：103.063
Psa：63.32
Logp：0.5086

MDL号：MFCD00211284

密度：1.105 g/cm3
沸点：223.6ºC at 760 mmHg
闪点：89ºC

海关编码：2922499990