L-Threonine is used to help alleviate anxiety and mild depression. It is a key component of proteins such as tooth enamel, collagen, and elastin. As an important amino acid in the nervous system, it plays a vital role in porphyrin and fat metabolism. It is beneficial for intestinal disorders and indigestion and can also serve as a prodrug to effectively increase brain glycine levels.
L-Threonine Chemical Properties
| Melting point | 256 °C (dec.) (lit.) |
| Alpha | -28.4 º (c=6, H2O) |
| Boiling point | 222.38°C (rough estimate) |
| Density | 1.3126 (rough estimate) |
| Bulk density | 370kg/m3 |
| FEMA | 4710 | L-THREONINE |
| Refractive index | -28 ° (C=6, H2O) |
| Storage temp | 2-8°C |
| Solubility | H2O: 50 mg/mL |
| Form | Powder |
| pka | 2.09(at 25℃) |
| Color | Yellow |
| PH | 5-6 (100g/l, H2O, 20℃) |
| Odor | ADM L-Threonine is a high quality product specifically designed for the feed industry. Produced from advanced technology, ADM L-Threonine is composed of 100% isomerically pure L-Threonine, which translates into 100% bioavailability for swine, poultry, and other animals.mild savory |
| Odor Type | Savory |
| Biological source | Non-animal source |
| Optical Rotation | [α]20/D 28.5±0.5°, c = 5% in H2O |
| Water Solubility | 90 g/L (20 ºC) |
| Merck | 14,9380 |
| JECFA Number | 2119 |
| BRN | 1721646 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| InChIKey | AYFVYJQAPQTCCC-GBXIJSLDSA-N |
| LogP | -2.94 |
| CAS DataBase Reference | 72-19-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Threonine(72-19-5) |
| EPA Substance Registry System | L-Threonine (72-19-5) |
Threonine is an important nutritional supplement that can fortify cereals, pastries, and dairy products, help the body recover from fatigue, and promote growth and development similar to tryptophan. Its hydroxyl-containing structure helps retain water in human skin and interacts with oligosaccharide chains to protect cell membranes. Threonine also plays a vital role in the body by promoting phospholipid synthesis and fatty acid oxidation, with applications in the medical field.

