Etoricoxib Impurity 13 CAS 1350206-14-2
| CAS No. | 1350206-14-2 |
| Molecular Formula | C18H16N2O2S |
| Molecular Weight | 324.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Etoricoxib Impurity 13.
As a process- or degradation-related impurity, Etoricoxib Impurity 13 (CAS 1350206-14-2, C18H16N2O2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C18H16N2O2S, Etoricoxib Impurity 13 contains a steroid core, 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 324.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C18H16N2O2S |
| Molecular Weight | 324.40 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 17 (CAS 292067-97-1)
- Etoricoxib Impurity 15 (CAS 307531-96-0)
- Etoricoxib Impurity 11 (CAS 2901801-70-3)
- Etoricoxib Impurity 46 (CAS 2708988-48-9)
- Etoricoxib Impurity 52 (CAS CATO-C4X-108052)
- Etoricoxib Impurity 81 (CAS 2241145-66-2)
- Etoricoxib Impurity 84 (CAS CATO-C4X-108084)
- Etoricoxib Impurity 2 (CAS 316149-01-6)
Recommended Standards
- 2-[(4,5-Diphenyl-1H-imidazol-2-yl)thio]-propanoic acid 4484AE 50677-46-8 C18H16N2O2S (CAS 50677-46-8)
- Quetiapine Impurity 68 (CAS CATO-C4X-124468)
- 22008-60-2 N-Formylmethionylphenylalanine N-(N-Formyl-L-methionyl)-L-phenylalanine L-Phenylalanine, N-formyl-L-methionyl- CCRIS 2596 (CAS 22008-60-2)
- Sumatriptan impurity 3 (CAS CATO-C4X-17573)
- Safinamide Impurity 55 (CAS CATO-C4X-159055)
- Pazopanib Impurity 9 (CAS 444731-72-0)
- Alectinib Impurity 50 (CAS CATO-C4X-283650)
- Baloxavir Impurity 121 (CAS CATO-C4X-2108121)
- 2-(3-Chlorophenyl)-3-methylquinoline-4-carbonyl chloride (CAS 1160264-96-9)
- 2-(4-Chlorophenoxy)-N-(tert-pentyl)acetamide (CAS 885912-91-4)
- tert-Butyl 2'-(methylthio)-6'-oxo-5'-(((trifluoromethyl)sulfonyl)oxy)-6'H-spiro[cyclohexane-1,9'-pyrazino[1',2':1,5]pyrrolo[2,3-d]pyrimidine]-7'(8'H)-carboxylate (CAS 2170746-98-0)
- (E)-3-(3,4-dihydroisoquinolin-2(1H)-yl)-1-(pyridin-2-yl)prop-2-en-1-one (CAS 1823194-78-0)
- 2-(Chloromethyl)-6-(difluoromethyl)-4-methyl-3-nitropyridine (CAS 1805623-90-8)
- Semaglutide impurity 72 (CAS CATO-C4X-222672)
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