Parecoxib Impurity 14 CAS 1709956-89-7
| CAS No. | 1709956-89-7 |
| Molecular Formula | C19H18N2O4S |
| Molecular Weight | 370.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C19H18N2O4S, Parecoxib Impurity 14 contains a flavonoid 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 370.42 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.
CATO supplies Parecoxib Impurity 14 (CAS 1709956-89-7), a pharmacopoeial impurity reference standard (molecular formula C19H18N2O4S, MW 370.42 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Parecoxib Impurity 14 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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.) | 1994 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Parecoxib Standards
- Parecoxib sodium Impurity 10 (CAS 2229657-81-0)
- Parecoxib sodium Impurity 40 (CAS 2235371-89-6)
- Parecoxib Impurity 46 (CAS 477594-28-8)
- Parecoxib (CAS 198470-84-7)
- 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
- Pioglitazone impurity 27 (CAS CATO-C4X-138327)
- Pioglitazone Ketone (M-III) (CAS 146062-45-5)
- Sunitinib Impurity 19 (CAS 356068-97-8)
- Sunitinib Impurity 18 (CAS 326914-17-4)
- Darifenacin Impurity 5 (CAS CATO-C4X-16055)
- Salbutamol Impurity 129 (CAS 18910-69-5)
- Alogliptin Impurity 66 (CAS 452-63-1)
- 2,7-Diaminodibenzo[b,e][1,4]dioxine (CAS 71400-35-6)
- STO-609 Acetate (CAS 1173022-21-3)
- (1S)-1-[4-(2,2,2-trifluoroethyl)-1,2,4-triazol-3-yl]ethanol (CAS 2833707-09-6)
- 1-(6-(4-Chlorophenyl)-2-methylpyridin-3-yl)ethanol (CAS 1432225-25-6)
- (R)-4-(2-Chloropropanamido)benzamide (CAS 2137036-65-6)
- 2-Methoxy-d3-ethanol (CAS 97840-77-2)
- Delicious Peptide (bovine) (CAS 73984-05-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com