Cefdinir CP Impurity M CAS 946573-41-7
| CAS No. | 946573-41-7 |
| Molecular Formula | C14H13N5O5S2 |
| Molecular Weight | 395.41 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 Cefdinir CP Impurity M (CAS 946573-41-7), a pharmacopoeial impurity reference standard (molecular formula C14H13N5O5S2, MW 395.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefdinir CP Impurity M is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 395.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), Cefdinir CP Impurity M 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 | C14H13N5O5S2 |
| Molecular Weight | 395.41 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefdinir Standards
- Cefdinir (CAS 91832-40-5)
- Cefdinir CP Impurity R (CAS 178601-88-2)
- Cefdinir 7-isomer (CAS 178601-89-3)
- Cefdinir CP Impurity F (CAS CATO-C4X-121023)
- Cefdinir Impurity 33 (CAS CATO-C4X-121033)
- Cefdinir-13C-15N2 (CAS CATO-C4X-121027)
- Cefdinir Impurity 93 (CAS 206855-75-6)
- Cefdinir Impurity 92 (CAS 110198-95-3)
Recommended Standards
- Ceftazidime Impurity 84 (CAS CATO-C4X-121284)
- Cefotaxime Impurity 22 (CAS CATO-C4X-120122)
- Parecoxib Impurity 26 (CAS CATO-C4X-159126)
- Ceftriaxone Sodium EP Impurity B(Cefotaxime EP Impurity E)（Cefodizime Impurity D） (CAS 66340-33-8)
- Avanafil Impurity 11 (CAS 1638497-22-9)
- N-Nitroso Desloratadine Impurity 57 (CAS CATO-C4X-143057)
- Hydroxychloroquine Impurity 50 (CAS 58175-87-4)
- 1-(Tert-butyl) 2-methyl (2S,5R)-5-(4-hydroxyphenyl)pyrrolidine-1,2-dicarboxylate (CAS 1956372-62-5)
- Fipexide Hydrochloride (CAS 34161-23-4)
- N-Methyl-2,3-difluorobenzylamine (CAS 906645-41-8)
- Methyl 1-(4-aminophenyl)cyclobutane-1-carboxylate (CAS 1215017-84-7)
- 2-(2-Chlorophenyl)azepane oxalate (CAS 1177348-80-9)
- 2-Bromo-N-(thiazol-2-yl)butanamide (CAS 116200-99-8)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com