Norfloxacin Impurity 38 CAS CATO-C4X-146838
| CAS No. | CATO-C4X-146838 |
| Molecular Formula | C9H8Cl2FNO |
| Molecular Weight | 236.07 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Norfloxacin Impurity 38 (CAS CATO-C4X-146838) is a certified pharmaceutical impurity reference standard with the molecular formula C9H8Cl2FNO and a molecular weight of 236.07 g/mol.
Structurally, Norfloxacin Impurity 38 (C9H8Cl2FNO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 236.07 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Norfloxacin Impurity 38 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 | C9H8Cl2FNO |
| Molecular Weight | 236.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Norfloxacin Standards
- Norfloxacin lmpurity 28 (CAS 1119454-98-6)
- Norfloxacin lmpurity 29 (CAS 1529604-41-8)
- Norfloxacin Impurity 44 (CAS 140700-98-7)
- Norfloxacin Impurity 12 (CAS 75001-63-7)
- Norfloxacin Impurity 3 (CAS 16600-24-1)
- Norfloxacin Impurity 32 (CAS 70032-16-5)
- Norfloxacin Impurity 57 (CAS CATO-C4X-146857)
- Norfloxacin Impurity 52 (CAS 7251-32-3)
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