L-Threonine, CAS Number: 72-19-5
L-Threonine is an essential proteinogenic amino acid that cannot be synthesized in sufficient quantities by many animals and must be obtained through the diet.
Product Chemical Properties
Chemical Name: L-Threonine
Synonyms: L-(-)-Threonine; Threonine; H-Thr-OH; (2S,3R)-2-Amino-3-hydroxybutanoic Acid; L-2-Amino-3-hydroxybutyric Acid
CAS Number: 72-19-5
EC Number: 200-774-1
Molecular Formula: C₄H₉NO₃
Molecular Weight: 119.12 g/mol
Optical Rotation: Approximately -27.5° to -29.0° (C=6, H₂O), depending on test conditions
Melting Point: Approximately 256–270°C (decomposition; reported values vary by source and test method)

Product Technical Specification
Appearance: White or light-brown Crystal or powder
Loss on drying%: ≤1.0
Residues on ignition%: ≤0.5
Assay%: 98.5
Specific rotation(α)D20: -26.0º - 29.0º
Heavy metals(Pb)(mg/kg): ≤20
Arsenic(As)(mg/Kg): ≤2
PH: 5.0-6.5
Applications of L-Threonine
L-Threonine (CAS 72-19-5) is a bulk essential amino acid raw material, mainly used as a nutritional feed additive, and also applied for food fortification, compound amino acid infusion solutions and pharmaceutical preparation production.
Packaging
25kg/bag.
Production Capacity
8000MT/year.
Storage Requirements
Store in a tightly sealed container in a cool, dry and well-ventilated place. Protect from moisture and contamination.
L-Threonine Bulk Supply from China
Hosea Chem supplies L-Threonine for animal nutrition, food processing and industrial applications. Contact us for current specifications, COA, SDS, packaging details and bulk supply quotations from China.