Parecoxib CAS 1709956-95-5
| CAS No. | 1709956-95-5 |
| Molecular Formula | C16H12ClNO3S |
| Molecular Weight | 333.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Parecoxib (C16H12ClNO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Parecoxib (CAS 1709956-95-5), a certified reference material (molecular formula C16H12ClNO3S, MW 333.79 g/mol) for analytical method development and quality control.
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 | C16H12ClNO3S |
| Molecular Weight | 333.79 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Parecoxib Standards
- Parecoxib Impurity 23 (CAS 509074-26-4)
- Parecoxib Impurity 30 (CAS 1373038-57-3)
- Parecoxib Impurity 31 (CAS CATO-C4X-159131)
- Parecoxib sodium Impurity 7 (CAS 501093-49-8)
- Parecoxib Impurity 24 (CAS 2749361-92-8)
- Parecoxib Impurity 25 (CAS 1884279-18-8)
- Parecoxib Impurity 59 (CAS CATO-C4X-159159)
- Parecoxib Impurity 5 (CAS CATO-C4X-15915)
Recommended Standards
- 424789-76-4 1-[1-(Benzenesulfonyl)-1H-indol-3-yl]-2-chloroethan-1-one DTXSID00573825 (CAS 424789-76-4)
- n-(4-Chlorophenyl)-4-(2-fluorophenyl)piperazine-1-carboxamide (CAS 401578-01-6)
- Dotinurad Impurity 178 (CAS CATO-C4X-2494178)
- N-(3-Chloroquinoxalin-2-yl)-4-methylbenzenesulfonamide (CAS 4029-41-8)
- Methylophiopogonone A (CAS 74805-90-6)
- 3-Isopropyl-2-azaspiro[3.3]Heptan-1-one (CAS 1803602-08-5)
- tert-Butyl (2-iodo-6-methoxyphenyl)carbamate (CAS 194869-15-3)
- 2-(3-Fluoro-phenyl)-propionic acid methyl ester (CAS 1248277-89-5)
- 1-(3,4-dihydro-2h-pyran-5-yl)-2,2,2-trifluoroethan-1-one (CAS 109317-74-0)
- 2-(4-(3,4-Dimethoxyphenyl)thiazol-2-yl)-3-((3-fluoro-4-methylphenyl)amino)acrylonitrile (CAS 333414-69-0)
- 2-Chloro-N-(2-(diethylamino)ethyl)benzamide (CAS 2852-24-6)
- 4-Formyl-2-methoxyphenyl thiophene-2-carboxylate (CAS 361472-61-9)
- 2-(Pent-4-ynyloxy)pyridine-3-carboximidamide (CAS 1984149-24-7)
- Semaglutide impurity 39 (CAS CATO-C4X-222639)
Why CATO?
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