L-Ornithine L-Aspartate Impurity 3 CAS 7327-72-2
| CAS No. | 7327-72-2 |
| Molecular Formula | C9H17N3O5 |
| Molecular Weight | 247.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 247.25 g/mol gives L-Ornithine L-Aspartate Impurity 3 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, L-Ornithine L-Aspartate Impurity 3 (CAS 7327-72-2, C9H17N3O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, L-Ornithine L-Aspartate Impurity 3 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 247.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 certified reference material (CRM), L-Ornithine L-Aspartate Impurity 3 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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.) | 1959 |
| Nitrogen Atoms | 3 |
Related L Standards
- 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 8 (CAS 14169-16-5)
- 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)
Recommended Standards
- (S)-2-amino-5-((S)-3-amino-3-carboxypropanamido)pentanoic (CAS 2135301-50-5)
- Rimegepant Impurity 105 (CAS CATO-C4X-2487105)
- Melatonin Impurity 19 (CAS CATO-C4X-229220)
- Procaterol Impurity 30 (CAS CATO-C4X-181030)
- Sugammadex Impurity Org199425-1 (CAS 2412953-12-7)
- Metformin EP Impurity D (CAS 108-78-1)
- Vericiguat Impurity 83 (CAS CATO-C4X-289683)
- Platycoside M1 (CAS 917482-67-8)
- 2-Amino-6-sulfanylpyridine-3,5-dicarbonitrile (CAS 111971-56-3)
- 2-(1-Chloroethyl)-5-ethyl-1,3,4-oxadiazole (CAS 926214-36-0)
- N-Ethyl-5-nitropyridin-2-amine (CAS 67730-09-0)
- Methyl 5-(furan-2-yl)-1h-pyrrole-2-carboxylate (CAS 72078-39-8)
- [(3-Bromophenyl)methyl](butyl)amine (CAS 60509-39-9)
- D-Pro36-Tirzepatide (CAS CATO-CPTD788903)
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