Cefradine EP Impurity C&D Mixture CAS CATO-C4X-12158
| CAS No. | CATO-C4X-12158 |
| Molecular Formula | C16H19N3O5S |
| Molecular Weight | 365.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Cefradine EP Impurity C&D Mixture (C16H19N3O5S) is characterized by a flavonoid core, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Cefradine EP Impurity C&D Mixture (CAS CATO-C4X-12158), a pharmacopoeial impurity reference standard (molecular formula C16H19N3O5S, MW 365.40 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Cefradine EP Impurity C&D Mixture 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 | C16H19N3O5S |
| Molecular Weight | 365.40 g/mol |
| Purity | >90% |
| 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefradine Standards
- Cefradine EP Impurity D (CAS CATO-C4X-12156)
- Cefradine EP Impurity C (CAS CATO-C4X-12157)
- Cefradine EP Impurity E (CAS 215172-75-1)
- Cefradine Impurity 19 (CAS CATO-C4X-121519)
- Cefradine Impurity 13 (CAS CATO-C4X-121513)
- Cefradine delta-isomer (CAS 150870-62-5)
- Cefradine Impurity 11 (CAS CATO-C4X-121511)
- L-Cefradine (CAS CATO-C4X-121520)
Recommended Standards
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- Cephalexin Impurity 19 (CAS CATO-C4X-126119)
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- Aztreonam Impurity 116 (CAS CATO-C4X-1522116)
- Clindamycin Impurity 88 (CAS CATO-C4X-134188)
- Sildenafil Impurity 298 (CAS CATO-C4X-1128298)
- Sildenafil Impurity 41 (CAS 304435-83-4)
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