Imrecoxib Impurity 11 CAS 896729-07-0
| CAS No. | 896729-07-0 |
| Molecular Formula | C21H23NO4S |
| Molecular Weight | 385.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 385.48 g/mol gives Imrecoxib Impurity 11 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Imrecoxib Impurity 11 (CAS 896729-07-0, C21H23NO4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Imrecoxib Impurity 11 (C21H23NO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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 | C21H23NO4S |
| Molecular Weight | 385.48 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Imrecoxib Standards
- Imrecoxib Impurity 92 (CAS CATO-C4X-23792)
- Imrecoxib Impurity 53 (CAS 3038592-00-3)
- Imrecoxib Impurity 26 (CAS 2305368-54-9)
- Imrecoxib Impurity 48（Z-isomer） (CAS CATO-C4X-237948)
- Imrecoxib Impurity 52（Z-Isomer） (CAS CATO-C4X-237952)
- Imrecoxib Impurity 67 (CAS CATO-C4X-237967)
- Imrecoxib Impurity 79 (CAS CATO-C4X-237979)
- Imrecoxib Impurity 81 (E-Isomer) (CAS CATO-C4X-237981)
Recommended Standards
- Racecadotril (CAS 81110-73-8)
- Amisulpride Impurity 61 (CAS CATO-C4X-104561)
- Aprepitant impurity 36 (CAS CATO-C4X-237936)
- Amisulpride Impurity 60 (CAS 2876854-07-6)
- Spironolactone EP Impurity G (CAS 880106-10-5)
- Lemborexant Impurity 30 (CAS CATO-C4X-304230)
- Methylprednisolone Acetate EP Impurity I (CAS 6870-94-6)
- 2-Bromo-6-hydroxy-5-(trifluoromethoxy)nicotinonitrile (CAS 1803431-61-9)
- (S)-2-Amino-N-methyl-N-(pyridin-4-ylmethyl)propanamide (CAS 1307127-76-9)
- N-(5-Amino-2-methylphenyl)-2-(2-ethoxyethoxy)-benzamide (CAS 1020054-84-5)
- 2-[Benzo(b)thiophen-2-yl]-5-hydroxypyridine (CAS 1261998-84-8)
- Sulukast (CAS 98116-53-1)
- (S)-3-Methyl-1,4-diazepan-2-one (CAS 128427-25-8)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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