Parecoxib CAS 198470-84-7
| CAS No. | 198470-84-7 |
| Molecular Formula | C19H18N2O4S |
| Molecular Weight | 370.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 Parecoxib.
Parecoxib (CAS 198470-84-7), molecular formula C19H18N2O4S and molecular weight 370.42 g/mol, is a CATO reference standard with documented purity and traceability.
Parecoxib (C19H18N2O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
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 | C19H18N2O4S |
| Molecular Weight | 370.42 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.) | 2013 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Parecoxib Standards
- Parecoxib sodium Impurity 10 (CAS 2229657-81-0)
- Parecoxib Impurity 14 (CAS 1709956-89-7)
- Parecoxib sodium Impurity 40 (CAS 2235371-89-6)
- Parecoxib Impurity 46 (CAS 477594-28-8)
- Parecoxib Impurity 62 (CAS 2304623-36-5)
- Parecoxib Impurity 63 (CAS 2242749-02-4)
- Parecoxib Impurity 71 (CAS 2304623-38-7)
- Parecoxib Impurity 50 (CAS 3026677-40-4)
Recommended Standards
- Sulpiride impurity 14 (CAS CATO-C4X-187614)
- Pioglitazone impurity 27 (CAS CATO-C4X-138327)
- Pimavanserin Impurity 41 (CAS CATO-C4X-193841)
- Pioglitazone Ketone (M-III) (CAS 146062-45-5)
- 3-(4-Chlorophenoxy)-5-(trifluoromethyl)pyridine-2-carbonitrile (CAS 256658-19-2)
- 2-Oxo-3-phenyltetrahydrofuran-3-carboxylic acid (CAS 19340-59-1)
- SR-17018 (CAS 2134602-45-0)
- 3-[3-(Benzyloxy)phenyl]-2-fluorobenzoic acid (CAS 1381944-41-7)
- [2,2'-Bi[1,3]dithiolo[4,5-d][1,3]dithiolylidene]-5,5'-dione (CAS 64394-47-4)
- 9-Oxa-6-azaspiro[4.5]Decane (CAS 51130-61-1)
- Indomethacin Isopropyl Ester (CAS 72616-25-2)
- (Z)-5-hydroxy-2-(2-hydroxy-3-methoxybenzylidene)benzofuran-3(2H)-one (CAS 866156-43-6)
- Tegoprazan Impurity 105 (CAS CATO-C4X-2297105)
- (Asp28)-Exenatide trifluoroacetate salt (CAS 1678417-24-7)
Why CATO?
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