Imrecoxib Impurity 45 CAS CATO-C4X-237945
| CAS No. | CATO-C4X-237945 |
| Molecular Formula | C21H21NO4S |
| Molecular Weight | 383.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Imrecoxib Impurity 45 (CAS CATO-C4X-237945), a pharmacopoeial impurity reference standard (molecular formula C21H21NO4S, MW 383.46 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C21H21NO4S, Imrecoxib Impurity 45 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 383.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Imrecoxib Impurity 45 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 | C21H21NO4S |
| Molecular Weight | 383.46 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Imrecoxib Standards
- Imrecoxib Impurity 40 (CAS CATO-C4X-237940)
- Imrecoxib Impurity 41 (CAS CATO-C4X-237941)
- Imrecoxib Impurity 42 (CAS CATO-C4X-237942)
- Imrecoxib Impurity 43 (CAS CATO-C4X-237943)
- Imrecoxib Impurity 44 (CAS CATO-C4X-237944)
- Imrecoxib Impurity 46 (CAS CATO-C4X-237946)
- Imrecoxib Impurity 47 (CAS CATO-C4X-237947)
- Imrecoxib Impurity 9 (CAS 3038592-01-4)
Recommended Standards
- Finerenone Impurity 182-d5 (CAS CATO-C4X-2880182)
- R-Finerenone-d5 (CAS CATO-C4X-2880283)
- Meropenem Impurity 11 (CAS CATO-C4X-130911)
- Finerenone-d5 (CAS CATO-C4X-288046)
- Cabazitaxel Impurity 25 (CAS 1638286-64-2)
- Rabeprazole Impurity 44 (CAS CATO-C4X-112144)
- RSS0343 Impurity 2 (CAS CATO-C4X-32722)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com