Celecoxib Impurity 36 CAS CATO-C4X-104336
| CAS No. | CATO-C4X-104336 |
| Molecular Formula | C15H17N3O2S |
| Molecular Weight | 303.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Celecoxib Impurity 36 (CAS CATO-C4X-104336), a pharmacopoeial impurity reference standard (molecular formula C15H17N3O2S, MW 303.38 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C15H17N3O2S, Celecoxib Impurity 36 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 303.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C15H17N3O2S |
| Molecular Weight | 303.38 g/mol |
| Purity | >95% |
| 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 Celecoxib Standards
- Celecoxib Impurity 77 (CAS CATO-C4X-104377)
- Celecoxib Impurity 78 (CAS CATO-C4X-104378)
- Celecoxib Impurity 9 (CAS 1061214-06-9)
- Celecoxib Impurity 48 (CAS 515845-18-8)
- Celecoxib Impurity 16 (CAS 915280-81-8)
- Celecoxib Impurity 60 (CAS CATO-C4X-104360)
- Celecoxib Impurity 70 (CAS 6397-71-3)
- Celecoxib Impurity 74 (CAS CATO-C4X-104374)
Recommended Standards
- 3-(benzylsulfanyl)-6-phenyl-4-pyridazinecarbonitrile 338417-94-0 KS-0000372Z (CAS 338417-94-0)
- tert-Butyl (4-(5-formylthiophen-2-yl)phenyl)carbamate (CAS 886502-44-9)
- Tert-butyl (3-(5-formylthiophen-2-yl)phenyl)carbamate (CAS 886509-51-9)
- Tert-butyl (2-(5-formylthiophen-2-yl)phenyl)carbamate (CAS 886509-43-9)
- Isavuconazole Impurity 110 (CAS CATO-C4X-1236110)
- Eperisone Impurity 4 (CAS 1026-87-5)
- Ozenoxacin Impurity 81 (CAS CATO-C4X-279681)
- 3-Bromo-4-morpholinobenzonitrile (CAS 1207541-01-2)
- 1-(2-(M-tolyloxy)ethyl)-1,3-dihydro-2h-benzo[d]imidazol-2-imine (CAS 325740-00-9)
- N,N,3-Trimethyl-5-(1-methylpyrrolidin-2-yl)pyridin-2-amine (CAS 1352522-35-0)
- 4-Hydrazinyl-8-(trifluoromethyl)quinoline (CAS 57369-92-3)
- 3-Bromo-2-(((4-phenyl-4H-1,2,4-triazol-3-yl)thio)methyl)imidazo[1,2-a]pyridine (CAS 299955-42-3)
- 1-Methyldicyclopentadiene (CAS 16327-42-7)
- Tau Peptide (295-309) trifluoroacetate salt (CAS 330456-46-7)
Why CATO?
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com