L-Alanyl-D-glutamine CAS 281660-34-2
| CAS No. | 281660-34-2 |
| Molecular Formula | C8H15N3O4 |
| Molecular Weight | 217.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
L-Alanyl-D-glutamine (C8H15N3O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
L-Alanyl-D-glutamine (CAS 281660-34-2), molecular formula C8H15N3O4 and molecular weight 217.22 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H15N3O4 |
| Molecular Weight | 217.22 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related L Standards
- L-Alanyl-L-glutamine (CAS 39537-23-0)
- Alanyl Glutamine Impurity 31 (CAS 656221-79-3)
- D-Alanyl-L-glutamine (CAS 205252-36-4)
- Alanyl Glutamine Impurity 3 (CAS CATO-C4X-19743)
- Alanyl Glutamine Impurity 33 (CAS 21064-18-6)
- Alanyl Glutamine Impurity 4 (CAS CATO-C4X-19744)
- Alanyl Glutamine Impurity 7 (CAS CATO-C4X-19747)
- Alanyl Glutamine Impurity 28 (CAS CATO-C4X-197428)
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Why CATO?
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