Etoricoxib Impurity 71 CAS 887479-63-2
| CAS No. | 887479-63-2 |
| Molecular Formula | C13H17NO2S |
| Molecular Weight | 251.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C13H17NO2S, Etoricoxib Impurity 71 contains a nitrogen-containing heterocyclic scaffold, 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 251.34 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).
As a process- or degradation-related impurity, Etoricoxib Impurity 71 (CAS 887479-63-2, C13H17NO2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Etoricoxib Impurity 71 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 | C13H17NO2S |
| Molecular Weight | 251.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 88 (CAS CATO-C4X-108088)
- Etoricoxib Impurity 27 (CAS 221615-72-1)
- Etoricoxib Impurity 76 (CAS CATO-C4X-108076)
- Etoricoxib Impurity 75 (CAS 40061-49-2)
- Etoricoxib Impurity 77 (CAS CATO-C4X-108077)
- Etoricoxib impurity 68 (CAS 58058-86-9)
- Etoricoxib Impurity 72 (CAS CATO-C4X-108072)
- Etoricoxib Impurity 82 (CAS 107825-28-5)
Recommended Standards
- N-[(3-Methoxyphenyl)methoxy]thian-4-imine (CAS 294853-65-9)
- 4-Isobutyl-5-((5-methyl-1h-pyrazol-1-yl)methyl)-4h-1,2,4-triazole-3-thiol (CAS 1002205-07-3)
- N,N-Diallyl-4-methylbenzenesulfonamide (CAS 50487-72-4)
- 2-[(4-Butoxyphenyl)methylene]hydrazinecarbothioamide (CAS 100318-30-7)
- Edoxaban Impurity 16 (CAS CATO-C4X-106316)
- Dotinurad Impurity 53 (CAS CATO-C4X-249453)
- Dobutamine Impurity 50 (CAS CATO-C4X-129850)
- Sertraline Impurity 46 (CAS CATO-C4X-134446)
- α-D-Glucopyranoside, phenylmethyl 2-(acetylamino)-2-deoxy-3-O-(phenylmethyl)-, 6-(4-methylbenzenesulfonate) (CAS 50908-12-8)
- 5-Amino-2,1,3-benzothiadiazole (CAS 874-37-3)
- 3-(2-Iodo-6-methoxyphenoxy)propanal (CAS 1241505-36-1)
- 4-Chloro-5-nitro-6-(pyrrolidin-1-yl)pyrimidine (CAS 25710-26-3)
- Methyl 3-(3-hydroxyphenyl)acrylate (CAS 3943-95-1)
- Casein kinase II peptide Substrate (CAS 154444-98-1)
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