Orbifloxacin EP Impurity C CAS 126457-99-6
| CAS No. | 126457-99-6 |
| Molecular Formula | C19H21F2N3O3 |
| Molecular Weight | 377.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Orbifloxacin EP Impurity C (CAS 126457-99-6) is a certified pharmaceutical impurity reference standard with the molecular formula C19H21F2N3O3 and a molecular weight of 377.39 g/mol.
Based on its molecular formula C19H21F2N3O3, Orbifloxacin EP Impurity C contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 377.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Orbifloxacin EP Impurity C 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 | C19H21F2N3O3 |
| Molecular Weight | 377.39 g/mol |
| Appearance | Pale yellow to 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 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Orbifloxacin Standards
- Orbifloxacin EP Impurity D (CAS 126458-22-8)
- Orbifloxacin EP Impurity E (CAS CATO-C4X-25679)
- Orbifloxacin (CAS 113617-63-3)
- Orbifloxacin-d4 (CAS CATO-CCAD303465)
- Orbifloxacin EP Impurity G (CAS CATO-C4X-25676)
- Orbifloxacin impurity 11 (CAS CATO-C4X-256711)
- Orbifloxacin Impurity 3 (CAS CATO-C4X-25673)
- Orbifloxacin EP Impurity B (CAS CATO-C4X-25678)
Recommended Standards
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- Deferasirox-d4 (CAS 1133425-75-8)
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- Atosiban Impurity 89 (CAS CATO-C4X-229389)
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- 3-(2,5-Dioxo-1-propylimidazolidin-4-yl)propanoic acid (CAS 1008075-32-8)
- N-(6-Methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)benzamide (CAS 591726-19-1)
- 2-(3-(Methoxymethyl)pyrrolidin-1-yl)ethanamine (CAS 1341082-47-0)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
Why CATO?
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