Roxithromycin Impurity 14 CAS CATO-C4X-130314
| CAS No. | CATO-C4X-130314 |
| Molecular Formula | C4H9ClO3 |
| Molecular Weight | 140.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Roxithromycin Impurity 14 (CAS CATO-C4X-130314, C4H9ClO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, Roxithromycin Impurity 14 is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 140.57 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), Roxithromycin Impurity 14 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 | C4H9ClO3 |
| Molecular Weight | 140.57 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| Halogen Content | Cl-containing |
Related Roxithromycin Standards
- Roxithromycin Impurity 15 (CAS 89268-03-1)
- Roxithromycin Impurity 17 (CAS 74498-88-7)
- Roxithromycin Impurity 18 (CAS 67796-27-4)
- Roxithromycin impurity 29 (CAS CATO-C4X-130329)
- Roxithromycin Impurity A (CAS 59319-72-1)
- Roxithromycin EP Impurity I TFA salt (CAS 425365-66-8(free base))
- Roxithromycin EP Impurity B (CAS 214902-82-6)
- Roxithromycin EP Impurity B Isomer (CAS CATO-C4X-130321)
Recommended Standards
- Amlodipine Impurity 65 (CAS 89-98-5)
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- 3-Chlorobenzaldehyde (CAS 587-04-2)
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- Cefaclor Impurity 50 (CAS CATO-C4X-127050)
- Resmetirom impurity 82 (CAS CATO-C4X-291282)
- Cefprozil Impurity 25 (CAS CATO-C4X-149225)
- Methyl 2-(3-bromophenyl)-2-(4-nitrophenyl)acetate (CAS 1980086-64-3)
- (E)-3-(p-Tolyl)-1-(2,4,6-trimethoxyphenyl)prop-2-en-1-one (CAS 1017899-30-7)
- 2-(Difluoromethoxy)-5-iodoaniline (CAS 1261760-69-3)
- 5-Chloro-7-fluoro-2,3-dihydro-1h-indole-2,3-dione (CAS 953894-64-9)
- 4-Amino-5-(4-bromobenzoyl)-N-methylisoxazole-3-carboxamide (CAS 830326-85-7)
- Pretomanid Impurity 20 (CAS CATO-C4X-260620)
- Des-Lys16-Tirzepatide (CAS CATO-CPTD788957)
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