Etoricoxib impurity 70 CAS 202409-40-3
| CAS No. | 202409-40-3 |
| Molecular Formula | C18H15ClN2O2S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Etoricoxib impurity 70.
Etoricoxib impurity 70 (CAS 202409-40-3) is a certified pharmaceutical impurity reference standard with the molecular formula C18H15ClN2O2SHCl and a molecular weight of 395.30 g/mol.
Based on its molecular formula C18H15ClN2O2SHCl, Etoricoxib impurity 70 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 395.30 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).
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.
CATO manufactures Etoricoxib impurity 70 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 | C18H15ClN2O2S HCl |
| Molecular Weight | 395.30 g/mol |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 18 (CAS 1027162-35-1)
- Etoricoxib Impurity 3 (CAS 10297-73-1)
- Etoricoxib Impurity 82 (CAS 107825-28-5)
- Etoricoxib D4 (CAS 1131345-14-6)
- Etoricoxib Impurity 37 (CAS 118362-28-0)
- Etoricoxib Impurity 13 (CAS 1350206-14-2)
- Etoricoxib Impurity 40 (CAS 1352804-27-3)
- Etoricoxib Impurity 5 Lithium Salt (CAS 1421227-96-4)
Recommended Standards
- Hydrocortisone Impurity 71 (CAS 37413-94-8)
- Olanzapine Impurity 62 (CAS 17842-18-1)
- Erlotinib Impurity 82 (CAS CATO-C4X-106982)
- 8-Fluoroquinoline-5,6-diamine (CAS 1092285-85-2)
- 4,6-Dimethyl-3-[2-(propan-2-yl)benzenesulfonyl]-1,2-dihydropyridin-2-one (CAS 866049-00-5)
- 5-amino-1,3,3-trimethyl-2,3-dihydro-1H-indol-2-one (CAS 953048-71-0)
- Rufinamide D2 Metabolite (CAS 1346597-78-1)
- 4-(3-Isopropyl-1-methyl-1h-1,2,4-triazol-5-yl)-1,2,5-oxadiazol-3-amine (CAS 1339342-72-1)
- Cyclohex-3-en-1-amine hydrochloride (CAS 22615-33-4)
- Gastrin Tetrapeptide (CAS 1947-37-1)
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