Etoricoxib Impurity 35 CAS 40061-50-5
| CAS No. | 40061-50-5 |
| Molecular Formula | C14H13NO3S |
| Molecular Weight | 275.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Etoricoxib Impurity 35 (CAS 40061-50-5) is a certified pharmaceutical impurity reference standard with the molecular formula C14H13NO3S and a molecular weight of 275.32 g/mol.
Based on its molecular formula C14H13NO3S, Etoricoxib Impurity 35 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 275.32 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
CATO manufactures Etoricoxib Impurity 35 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H13NO3S |
| Molecular Weight | 275.32 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 14 (CAS 307531-95-9)
- Etoricoxib Impurity 41 (CAS 60891-70-5)
- Etoricoxib Impurity 38 (CAS CATO-C4X-108038)
- Etoricoxib Impurity 82 (CAS 107825-28-5)
- Etoricoxib Impurity 72 (CAS CATO-C4X-108072)
- Etoricoxib Impurity 29 (CAS 1798110-01-6)
- Etoricoxib Impurity 6 (CAS 221615-75-4)
- Etoricoxib Impurity 27 (CAS 221615-72-1)
Recommended Standards
- Trifluoro-methanesulfonic acid (3-cyanopropyl)dimethylsilyl ester (CAS 2766571-16-6)
- Promethazine impurity 60 (CAS CATO-C4X-141860)
- trans-5-Fluoro-piperidine-1,3-dicarboxylic acid 1-tert-butyl ester 3-ethyl ester (CAS 2305079-85-8)
- Norfloxacin EP Impurity D (CAS 75001-82-0)
- Ziprasidone Impurity 28 (CAS CATO-C4X-124028)
- Doxapram Impurity 3 (CAS 117-34-0)
- Haloperidol Impurity N1 (CAS 939-52-6)
- Virginiaebutanolide C (CAS 109075-62-9)
- 2-(4-Cyano-2-methylphenyl)acetic acid (CAS 34841-56-0)
- 3-Ethynyl-5-fluoro-4-methylpyridine (CAS 1382850-26-1)
- 5-(4-Chloro-3-methylphenyl)-2H-tetrazole (CAS 885278-43-3)
- 2-(1-Hydroxy-2-methylcyclopentyl)acetic acid (CAS 1480532-13-5)
- 5,6-Dimethoxyquinolin-8-amine (CAS 6938-02-9)
- Des-Ser34-Gly33Tirzepatide (CAS CATO-CPTD788941)
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