L-Ornithine L-Aspartate Impurity 22 TFA Salt CAS 1174925-92-8 (free base)
| CAS No. | 1174925-92-8 (free base) |
| Molecular Formula | C9H17N3O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
L-Ornithine L-Aspartate Impurity 22 TFA Salt (CAS 1174925-92-8 (free base)) is a certified pharmaceutical impurity reference standard with the molecular formula C9H17N3O5C2HF3O2 and a molecular weight of 361.27 g/mol.
L-Ornithine L-Aspartate Impurity 22 TFA Salt (C9H17N3O5C2HF3O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C9H17N3O5 C2HF3O2 |
| Molecular Weight | 361.27 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related L Standards
- DL-Ornithine hydrochloride (CAS 1069-31-4)
- L-Ornithine L-Aspartate Impurity 6 (CAS 1174925-92-8)
- Ornithine, N5- [imino(nitroamino)methyl]-, methyl ester, monohydrochloride (CAS 127788-67-4)
- L-Ornithine-<SUP>13</SUP>C<SC><SUB>5</SUB></SC>,<SUP>15</SUP>N<SUB>2</SUB> Hydrochloric acid Salt (CAS 1346617-00-2)
- L-Ornithine L-Aspartate Impurity 8 (CAS 14169-16-5)
- D-Ornithine monohydrochloride (CAS 16682-12-5)
- L-Ornithine Dimer (CAS 195868-13-4)
- D-Ornithine, N2-[(1,1-dimethylethoxy)carbonyl]-N5-[imino[[(2,4,6-trimethylphenyl)sulfonyl]amino]methyl]- (CAS 200122-85-6)
Recommended Standards
- Cefathiamidine Impurity 21 (CAS CATO-C4X-133721)
- Melphalan EP Impurity B (CAS 1270153-04-2)
- Pitolisant impurity 29 (CAS CATO-C4X-252029)
- 4-[Chloro(difluoro)methoxy]-2-fluoro-1-methyl-benzene (CAS 1404193-90-3)
- (2S,3S)-2,3-diacetoxysuccinic acid (CAS 66749-60-8)
- 2-[2-Chloro-4-(trifluoromethyl)phenyl]-1,3-dioxolane (CAS 1334648-18-8)
- (1,4-Diazepan-1-yl)(2,5-dichlorophenyl)methanone hydrochloride (CAS 1595111-40-2)
- Methyl methacrylate/acrylonitrile copolymer (CAS 30396-85-1)
- Methyl 2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-8-carboxylate (CAS 1206229-00-6)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
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