L-Threonine
CAS: 72-19-5
Molecular Formula: C4H9NO3
Molecular Weight: 119.12
Identification: Infrared absorption
Specific Rotation: -26.7° ~ -29.1°
pH: 5.0 to 6.5
Loss on Drying: not more than 0.2%
Residue on Ignition: not more than 0.4%
Chloride: not more than 0.05%
Sulfate: not more than 0.03%
Chromatographic purity: As per USP32 (By TLC)
Iron: not more than 30ppm
Heavy Metals: not more than 15ppm
Individual impurity: ≤0.5%
Total impurity: ≤2.0%
Assay: 98.5 to 101.5%
