Cefadroxil Impurity 40 CAS 646536-87-0
| CAS No. | 646536-87-0 |
| Molecular Formula | C11H16N2O5S |
| Molecular Weight | 288.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Cefadroxil Impurity 40 (CAS 646536-87-0, C11H16N2O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefadroxil Impurity 40 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 288.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 manufactures Cefadroxil Impurity 40 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H16N2O5S |
| Molecular Weight | 288.32 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Cefadroxil Standards
- Cefadroxil Impurity 41 (CAS 68641-64-5)
- Cefadroxil Impurity 36 (CAS CATO-C4X-122436)
- Cefadroxil Impurity 27 (CAS 55102-13-1)
- Cefadroxil Impurity 39 (CAS CATO-C4X-122439)
- Cefadroxil Impurity 45 (CAS CATO-C4X-122445)
- Cefadroxil Impurity 19 (CAS CATO-C4X-122419)
- Cefadroxil EP Impurity D (CAS 144790-28-3)
- Cefadroxil USP Related Compound I (CAS 147103-94-4)
Recommended Standards
- Febuxostat Impurity 28 (CAS 161798-02-3)
- Faropenem Impurity 74 (CAS CATO-C4X-128974)
- Febuxostat Impurity 26 (CAS 1886961-39-2)
- Propofol Impurity 53 (CAS CATO-C4X-147353)
- Rosuvastatin Impurity 207 (CAS CATO-C4X-1169207)
- Spiramycin EP Impurity C (CAS CATO-C4X-23253)
- Dalilesen Impurity 5 (CAS 1505485-09-5)
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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