Parecoxib Impurity 69 Sodium Salt CAS 2229657-84-3
| CAS No. | 2229657-84-3 |
| Molecular Formula | C19H17N2O4S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Parecoxib Impurity 69 Sodium Salt (C19H17N2O4SNa) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a process- or degradation-related impurity, Parecoxib Impurity 69 Sodium Salt (CAS 2229657-84-3, C19H17N2O4SNa) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 | C19H17N2O4S Na |
| Molecular Weight | 392.40 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) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Parecoxib Standards
- Parecoxib sodium Impurity 9 (CAS 1373038-56-2)
- Parecoxib Impurity 30 (CAS 1373038-57-3)
- Parecoxib Impurity 43 (CAS 1373038-59-5)
- Parecoxib Impurity 68 (CAS 1373038-60-8)
- Parecoxib Sodium Impurity 13 Sodium Salt (CAS 1373038-60-8 (free acid))
- Parecoxib Impurity 35 (CAS 1373038-63-1)
- Parecoxib Impurity 22 (CAS 139395-94-1)
- Parecoxib sodium Impurity 11 (CAS 1708094-99-8)
Recommended Standards
- Pazufloxacin Impurity 11 (CAS 165071-10-3)
- Vilanterol Impurity 24 Formate (CAS CATO-C4X-193524)
- Amikacin Impurity 21 (CAS 40371-54-8)
- (6-Hydroxy-2-methyl-pyrimidin-4-yl)-acetic acid (CAS 54506-80-8)
- 4-Bromo-1-isopropyl-N,N-dimethyl-1H-pyrrole-2-carboxamide (CAS 1153308-55-4)
- (R)-2-Amino-N-methyl-3-phenylpropanamide (CAS 144836-90-8)
- m-PEG12-Br (CAS 1620461-89-3)
- H-Arg-Gly-Asp-Ser-OH (CAS 91037-65-9)
- 4-Iodo-6-methoxy-1H-indazole (CAS 887570-11-8)
- Allo-D-Ile12-Tirzepatide (CAS CATO-CPTD788963)
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