L-Threonine
L-Threonine (CAS: 72-19-5), with the molecular formula CH3CH(OH)CH(NH2)CO2H and a molecular weight of 119.12 g/mol, is an essential alpha-amino acid. Obtained from non-animal sources, it presents as a white crystalline powder. L-Threonine is recognised for its roles in protein synthesis and various metabolic functions, finding utility in biochemical research and cell culture applications.
- IUPAC
- (2S,3R)-2-Amino-3-hydroxybutyric acid

Biochemical Research
As an essential amino acid, L-Threonine is crucial for understanding protein structure and function. It is widely used in various biochemical and molecular biology research settings.
Cell Culture Media
L-Threonine is a fundamental component of cell culture media, providing essential nutrients for cell growth and maintenance. Its suitability for cell culture is confirmed by testing specifications.
Analytical Standards
The high purity of L-Threonine makes it suitable for use as an analytical standard in chromatographic and other analytical techniques, ensuring accurate quantification in complex samples.
| Molecular weight | 119.12 |
|---|---|
| Linear formula | CH3CH(OH)CH(NH2)CO2H |
| Assay | 99.0-101.0% |
| Form | powder |
| Impurities tested | endotoxin, tested |
| Suitability | meets EP, JP, USP testing specificationssuitable for cell culture |
| Biological source | from non-animal source |
| Melting point | 256 °C (dec.)(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 1 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is L-Threonine used for?
+
L-Threonine is used in biochemical research, as a component in cell culture media, and as an analytical standard. It is an essential alpha-amino acid derived from non-animal sources.
What are the CAS number and formula for L-Threonine?
+
The CAS number for L-Threonine is 72-19-5, and its linear formula is CH3CH(OH)CH(NH2)CO2H.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies L-Threonine with an assay of 99.0-101.0%. It meets EP, JP, and USP testing specifications and is suitable for cell culture. TSS does not represent this product as USP/BP/EP grade unless explicitly stated.
How should L-Threonine be handled safely?
+
When handling L-Threonine, it is advised to use safety precautions including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used if necessary. The substance has a WGK rating of 1 in Germany.
Is L-Threonine a controlled substance?
+
Based on the provided data, L-Threonine is not indicated as a controlled substance.
How is L-Threonine packed and exported?
+
L-Threonine is supplied as a powder. Tech Serve Solutions is a global supplier and exporter of fine chemicals, pharmaceutical intermediates, and laboratory reagents, capable of handling export requirements.
How can I request a sample or quote for L-Threonine?
+
To request a sample or quote for L-Threonine, please contact Tech Serve Solutions through our official channels.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis