Flomoxef Impurity N2 CAS 91177-27-4
| CAS No. | 91177-27-4 |
| Molecular Formula | C29H25ClN2O5 |
| Molecular Weight | 516.97 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Flomoxef Impurity N2.
As a process- or degradation-related impurity, Flomoxef Impurity N2 (CAS 91177-27-4, C29H25ClN2O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C29H25ClN2O5, Flomoxef Impurity N2 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 516.97 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C29H25ClN2O5 |
| Molecular Weight | 516.97 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Flomoxef Standards
- Flomoxef Impurity 15 (CAS CATO-C4X-138215)
- Flomoxef Impurity 29 (CAS 2095697-75-7)
- Flomoxef Impurity 52 (CAS CATO-C4X-138252)
- Flomoxef Impurity 28 (CAS CATO-C4X-138228)
- Flomoxef Impurity 53 (CAS CATO-C4X-138253)
- Flomoxef Impurity 1 (CAS 68313-94-0)
- Flomoxef Impurity 65 (CAS CATO-C4X-138265)
- Flomoxef Impurity 49 (CAS CATO-C4X-138249)
Recommended Standards
- Latamoxef Impurity 27 (CAS CATO-C4X-179827)
- Zopiclone Impurity 11 (CAS CATO-C4X-123811)
- 1-((4-Chlorophenyl)sulfonyl)-4-(5-(methylthio)-4-(3-(trifluoromethyl)phenyl)-4H-1,2,4-triazol-3-yl)piperidine (CAS 478042-33-0)
- BMS-856 (CAS 863382-83-6)
- Icotrokinra Impurity 2 (CAS CATO-C4X-35202)
- Labetalol Impurity 52 (CAS CATO-C4X-246652)
- Atrasentan Impurity 135 (CAS 1058349-10-2)
- 2-3-5-Tri-O-benzyl-1-O-(4-nitrobenzoyl)-D-arabinofuranose (CAS 52522-49-3)
- 1-Amino-2-(3,5-dimethylphenyl)propan-2-ol (CAS 1368785-10-7)
- [2-Amino-5-(methyloxy)phenyl](4-chlorophenyl)methanone (CAS 91713-54-1)
- 2,5-Difluoropyrimidine (CAS 17573-84-1)
- Lafutidine Impurity 8 (CAS 169899-15-4)
- 1171352-49-0 2-(4-Methylpiperidin-1-yl)pyrimidine-4-carboxylic acid MFCD14281566 (CAS 1171352-49-0)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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