L-Ornithine L-Aspartate Impurity 8 CAS 14169-16-5
| CAS No. | 14169-16-5 |
| Molecular Formula | C9H17N3O5 |
| Molecular Weight | 247.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a process- or degradation-related impurity, L-Ornithine L-Aspartate Impurity 8 (CAS 14169-16-5, C9H17N3O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
L-Ornithine L-Aspartate Impurity 8 (C9H17N3O5) 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C9H17N3O5 |
| Molecular Weight | 247.25 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.) | 1961 |
| Nitrogen Atoms | 3 |
Related L Standards
- L-Ornithine L-Aspartate Impurity 3 (CAS 7327-72-2)
- L-Ornithine L-Aspartate Impurity 6 (CAS 1174925-92-8)
- L-Ornithine L-Aspartate Impurity 7 (CAS 886996-37-8)
- L-Ornithine L-Aspartate Impurity 19 (CAS 60259-82-7)
- L-Ornithine Dimer (CAS 195868-13-4)
- L-Ornithine L-Aspartate Impurity 1 (CAS CATO-C4X-25361)
- D-Ornithine (CAS 348-66-3)
- L-Ornithine (CAS 70-26-8)
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