Faropenem Impurity 71 CAS CATO-C4X-128971
| CAS No. | CATO-C4X-128971 |
| Molecular Formula | C13H17NO7S |
| Molecular Weight | 331.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Faropenem Impurity 71 (CAS CATO-C4X-128971), a pharmacopoeial impurity reference standard (molecular formula C13H17NO7S, MW 331.34 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Faropenem Impurity 71 (C13H17NO7S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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. 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).
As a certified reference material (CRM), Faropenem Impurity 71 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 | C13H17NO7S |
| Molecular Weight | 331.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Faropenem Standards
- Faropenem Impurity 37 (CAS CATO-C4X-128937)
- Faropenem Impurity 38 (CAS CATO-C4X-128938)
- Faropenem Impurity 81 (CAS CATO-C4X-128981)
- Faropenem Impurity 72 (CAS CATO-C4X-128972)
- Faropenem Impurity 10 (CAS 106559-80-2)
- Faropenem Impurity 90 (CAS CATO-C4X-128990)
- Faropenem Impurity 76 (CAS CATO-C4X-128976)
- Faropenem Impurity 62 (CAS CATO-C4X-128962)
Recommended Standards
- N-(2,4-difluorophenyl)-4-methyl-2-(pyridin-3-yl)thiazole-5-carboxamide (CAS 321430-13-1)
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- n-(2,4-Difluorophenyl)-4-methyl-2-(pyridin-2-yl)thiazole-5-carboxamide (CAS 400079-01-8)
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Why CATO?
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