English name:L-2-Aminobutyric acid;L-2-Aminobutanoic acid;L-2-Amino-n-butyric acid;Butyrine;H-Abu-OH Other names:L(+)-2-aminobutyric acid CAS number : 1492-24-6 C4H9NO2=103.12 Level: BR Content: ≥98.5% Specific rotation: +19.0 to +21.0o (C=2,5N HCL) Chloride: ≤0.02% Heavy metal: ≤10ppm Arsenic Salt: ≤1.5 Ppm Dry weight loss: ≤0.30% Residue on ignition: ≤0.20% Properties: White crystalline powder or colorless flaky crystals. Sweet and sweet. Soluble in water and glacial acetic acid, slightly soluble in ethanol and ether. Melting point 270 to 280°C (depending on heating rate). Uses: Biochemical research. The substrate for γ-glutamylcysteine ​​synthetase was measured. Tissue culture preservation: RT