Ceftazidime Impurity 34 CAS 72820-16-7
| CAS No. | 72820-16-7 |
| Molecular Formula | C11H14N2O5S |
| Molecular Weight | 286.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ceftazidime Impurity 34 (CAS 72820-16-7), a pharmacopoeial impurity reference standard (molecular formula C11H14N2O5S, MW 286.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Ceftazidime Impurity 34 (C11H14N2O5S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Ceftazidime Impurity 34 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 | C11H14N2O5S |
| Molecular Weight | 286.30 g/mol |
| Purity | >90% |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ceftazidime Standards
- Ceftazidime Impurity 45 (CAS 2647895-27-8)
- Ceftazidime EP Impurity C (CAS 3432-88-0)
- Ceftazidime Impurity 80 (CAS CATO-C4X-121280)
- Ceftazidime Impurity 95 (CAS CATO-C4X-121295)
- Ceftazidime Impurity 38 Mixture (CAS 91999-75-6)
- Ceftazidime Impurity 26 (CAS CATO-C4X-121226)
- Ceftazidime Impurity 82 (CAS CATO-C4X-121282)
- Ceftazidime Impurity 91 (CAS CATO-C4X-121291)
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- Finerenone Impurity 245 (CAS 90954-22-6)
- 2-chloro-6-fluoro-1-methyl-1H-1,3-benzodiazole (CAS 348133-47-1)
- Des-Ile12-Aib13-Tirzepatide (CAS CATO-CPTD788960)
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