Flomoxef Impurity 1 CAS 68313-94-0
| CAS No. | 68313-94-0 |
| Molecular Formula | C29H25ClN2O6 |
| Molecular Weight | 532.97 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Flomoxef Impurity 1 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Flomoxef Impurity 1 (CAS 68313-94-0) is a certified pharmaceutical impurity reference standard with the molecular formula C29H25ClN2O6 and a molecular weight of 532.97 g/mol.
The molecular framework of Flomoxef Impurity 1 (C29H25ClN2O6) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Flomoxef Impurity 1 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 | C29H25ClN2O6 |
| Molecular Weight | 532.97 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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.) | 1976 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Flomoxef Standards
- Flomoxef Impurity 49 (CAS CATO-C4X-138249)
- Flomoxef Impurity 53 (CAS CATO-C4X-138253)
- Flomoxef Impurity 3 (CAS 103057-61-0)
- Flomoxef Impurity 28 (CAS CATO-C4X-138228)
- Flomoxef Impurity 37 (CAS 68314-38-5)
- Flomoxef Impurity 15 (CAS CATO-C4X-138215)
- Flomoxef Impurity N2 (CAS 91177-27-4)
- Flomoxef Impurity 29 (CAS 2095697-75-7)
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