Etoricoxib CAS 202409-33-4
| CAS No. | 202409-33-4 |
| Molecular Formula | C18H15ClN2O2S |
| Molecular Weight | 358.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Etoricoxib (C18H15ClN2O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Etoricoxib (CAS 202409-33-4), molecular formula C18H15ClN2O2S and molecular weight 358.84 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C18H15ClN2O2S |
| Molecular Weight | 358.84 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 86 (CAS CATO-C4X-108086)
- Etoricoxib Impurity 47 (CAS CATO-C4X-108047)
- Etoricoxib Impurity 44 (CAS 855307-79-8)
- Etoricoxib Impurity 45 (CAS 855307-80-1)
- Etoricoxib D3 (CAS 850896-71-8)
- Etoricoxib D4 (CAS 1131345-14-6)
- Etoricoxib Impurity 8 (CAS 646459-39-4)
- Etoricoxib Impurity 34 (CAS CATO-C4X-108034)
Recommended Standards
- 1,5-Dibromo-2-(bromomethyl)-4-methoxybenzene (CAS 125714-92-3)
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- 1,3-Dibromo-2-(bromomethyl)-5-methoxybenzene (CAS 130445-13-5)
- allyl N-{1-[(4-chlorophenyl)sulfonyl]-4-piperidinyl}carbamate (CAS 478047-75-5)
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- 4-Phenyl-4h-1,2,4-triazol-3-amine (CAS 2434-63-1)
- N,N-Diethyl-4-{[(2-methylpropyl)amino]methyl}aniline (CAS 893589-74-7)
- Omeprazole EP Impurity B (CAS 110374-16-8)
- (Z)-2-(1,3,3-Trimethylindolin-2-ylidene)acetaldehyde (CAS 1127303-63-2)
- [5-(3-methylphenyl)-1,3,4-oxadiazol-2-yl]methanol (CAS 54014-05-0)
- Experimental Allergic Encephalitogenic Peptide (CAS 29705-92-8)
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