Celecoxib Impurity 53 CAS 4392-39-6
| CAS No. | 4392-39-6 |
| Molecular Formula | C12H13N5O4S2 |
| Molecular Weight | 355.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Celecoxib Impurity 53 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.
CATO supplies Celecoxib Impurity 53 (CAS 4392-39-6), a pharmacopoeial impurity reference standard (molecular formula C12H13N5O4S2, MW 355.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Celecoxib Impurity 53 (C12H13N5O4S2) 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.
Physical & Chemical Properties
| Molecular Formula | C12H13N5O4S2 |
| Molecular Weight | 355.39 g/mol |
| Purity | 97%+ |
| 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 |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Celecoxib Standards
- Celecoxib Impurity 61 (CAS CATO-C4X-104361)
- Celecoxib Impurity 32 (CAS 170569-87-6)
- Celecoxib Impurity 60 (CAS CATO-C4X-104360)
- Celecoxib (CAS 169590-42-5)
- Celecoxib EP Impurity A (CAS 170570-01-1)
- Celecoxib EP Impurity B (CAS 331943-04-5)
- Celecoxib Impurity 42 (CAS CATO-C4X-104342)
- Celecoxib Impurity 8 (CAS 170569-99-0)
Recommended Standards
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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