L-Alanine-15N
L-Alanine-15N (CAS 25713-23-9), with the formula CH3CH(15NH2)CO2H and a molecular weight of 90.07 g/mol, is a stable isotope-labelled amino acid. This compound is specifically enriched with the 15N isotope, making it invaluable for applications in mass spectrometry, proteomics, and biomolecular NMR studies. Its precise isotopic labelling allows for detailed tracing and quantification in complex biological systems and research environments.

Mass Spectrometry and Proteomics
L-Alanine-15N serves as a critical internal standard or tracer in quantitative mass spectrometry-based proteomics. The isotopic enrichment allows for accurate measurement of endogenous alanine or proteins containing alanine, aiding in metabolic flux analysis and protein quantification studies.
Biomolecular NMR Spectroscopy
In NMR spectroscopy, L-Alanine-15N is used to study protein structure, dynamics, and interactions. The incorporation of the 15N isotope enables specific signal assignment and enhances spectral resolution, providing deeper insights into molecular mechanisms.
Metabolic Research
Researchers utilise L-Alanine-15N to investigate amino acid metabolism, protein synthesis, and metabolic pathways. The labelled compound can be introduced into biological systems to track its fate and understand its role in cellular processes.
Stable Isotope Labeling
As a stable isotope-labelled compound, L-Alanine-15N is fundamental for applications requiring precise isotopic enrichment. It is employed in various scientific disciplines where distinguishing between natural abundance and introduced molecules is crucial for accurate analysis.
| Molecular weight | 90.09 |
|---|---|
| Linear formula | CH3CH(15NH2)CO2H |
| Optical activity | [α]25/D +14.5°, c = 2 in 1 M HCl |
| Melting point | 314.5 °C (dec.)(lit.) |
| Isotopic Purity | 98 atom % 15N |
|---|---|
| Mol Wt | mol wt 90.07 by atom % calculation |
| Mass Shift | M+1 |
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-Alanine-15N used for?
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L-Alanine-15N is primarily used in mass spectrometry, proteomics, biomolecular NMR spectroscopy, and metabolic research as a stable isotope-labelled compound for tracing and quantification.
What is the CAS number and formula for L-Alanine-15N?
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The CAS number is 25713-23-9 and the formula is CH3CH(15NH2)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies L-Alanine-15N with an isotopic purity of 98 atom % 15N. TSS does not represent this product as USP, BP, EP or other pharmacopoeial grades.
How should L-Alanine-15N be handled?
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L-Alanine-15N has a GHS hazard classification of WGK Germany 1, indicating it is a water hazard. Handle with appropriate personal protective equipment in a well-ventilated area to avoid exposure.
How is L-Alanine-15N shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including L-Alanine-15N, adhering to all necessary regulations for international shipment.
How can I request a sample or quote for L-Alanine-15N?
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To request a sample or obtain a quotation for L-Alanine-15N, please contact our sales department via the website or direct inquiry.
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