Etoricoxib Impurity 9 CAS 202409-31-2
| CAS No. | 202409-31-2 |
| Molecular Formula | C17H13ClN2O2S |
| Molecular Weight | 344.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C17H13ClN2O2S, Etoricoxib Impurity 9 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 344.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Etoricoxib Impurity 9 (CAS 202409-31-2), a pharmacopoeial impurity reference standard (molecular formula C17H13ClN2O2S, MW 344.82 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C17H13ClN2O2S |
| Molecular Weight | 344.82 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 83 (CAS CATO-C4X-108083)
- Etoricoxib Impurity 25 (CAS CATO-C4X-108025)
- Etoricoxib Impurity 2 (CAS 316149-01-6)
- Etoricoxib Impurity 7 (CAS CATO-C4X-10807)
- Etoricoxib Impurity 81 (CAS 2241145-66-2)
- Etoricoxib Impurity 84 (CAS CATO-C4X-108084)
- Etoricoxib Impurity 46 (CAS 2708988-48-9)
- Etoricoxib Impurity 52 (CAS CATO-C4X-108052)
Recommended Standards
- 7-Chloro-2-(4-methoxybenzyl)-3-methyl-5-propylbenzofuran-4-ol (CAS 102612-16-8)
- N-{4-[2-(4-chlorophenyl)-4-methyl-1,3-thiazol-5-yl]pyrimidin-2-yl}acetamide (CAS 499795-81-2)
- 2,4,6-Tribromo-5-methylpyridin-3-amine (CAS 126325-52-8)
- N-(4-(1H-1,2,4-triazol-1-yl)phenyl)-2-((4-chlorophenyl)thio)acetamide (CAS 763124-76-1)
- Tiotropium impurity 43 (CAS CATO-C4X-176443)
- Adrenaline Impurity 17 HCl (CAS 29705-82-6)
- Pemafibrate Impurity 104 (2R,2'R) (CAS CATO-C4X-2903104)
- ((1,3,5-Triazine-2,4,6-triyl)tris(methylazanediyl))trimethanol (CAS 64124-21-6)
- tert-Butyl formylcarbamate (CAS 913344-40-8)
- 4,4'-Diisopropyl-1,1'-biphenyl (CAS 18970-30-4)
- Methyl 4-bromo-5-sulfamoylthiophene-2-carboxylate (CAS 2137611-69-7)
- N-(2-(Dimethylamino)pyrimidin-5-yl)benzamide (CAS 1396795-01-9)
- N-(cyclopropylmethyl)tetrahydrothiophen-3-amine (CAS 1019507-02-8)
- Hippocampal Cholinergic Neurostimulating Peptide (CAS 140158-49-2)
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