Telmisartan Impurity 66 CAS 885046-20-8
| CAS No. | 885046-20-8 |
| Molecular Formula | C19H19ClN4 |
| Molecular Weight | 338.83 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C19H19ClN4, Telmisartan Impurity 66 contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 338.83 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Telmisartan Impurity 66 (CAS 885046-20-8), a pharmacopoeial impurity reference standard (molecular formula C19H19ClN4, MW 338.83 g/mol) used for the identification and quantification of trace impurities in APIs.
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 Telmisartan Impurity 66 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 | C19H19ClN4 |
| Molecular Weight | 338.83 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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 |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Telmisartan Standards
- Telmisartan Impurity 24 (CAS 884330-17-0)
- Telmisartan Impurity 90 (CAS CATO-C4X-135990)
- Telmisartan Impurity 92 (CAS CATO-C4X-135992)
- Telmisartan EP Impurity H (CAS 114772-40-6)
- Telmisartan Impurity 42 (CAS 1860008-29-2)
- Telmisartan Impurity 43 (CAS 884330-18-1)
- Telmisartan Impurity N20 (CAS 1083158-65-9)
- Telmisartan Impurity 3 (CAS 133085-87-7)
Recommended Standards
- Roxatidine Impurity 27 (CAS CATO-C4X-121327)
- Desloratadine USP Related Compound F (CAS 117810-61-4)
- 4,4'-Dimethoxytrityl Chloride (CAS 40615-36-9)
- 6-chloro-3-(2,4-difluorophenyl)-2-sulfanyl-3,4-dihydroquinazolin-4-one (CAS 733030-99-4)
- Tucatinib Impurity 34 (CAS CATO-C4X-260534)
- Gentamicin Impurity 9 (CAS 287916-51-2 (free base))
- Raltitrexed Impurity 52 (CAS CATO-C4X-138652)
- 4-(3,5-Dimethoxyphenyl)butanenitrile (CAS 1057672-62-4)
- 3-((4-(1,1,1,3,3,3-Hexafluoro-2-hydroxypropan-2-yl)phenyl)amino)-2-phenyl-1H-inden-1-one (CAS 1024213-52-2)
- tert-butyl 6-hydroxy-1,4-oxazocane-4-carboxylate (CAS 2010092-64-3)
- [1-(4-fluorobenzyl)piperidin-3-yl]methanol,HCL (CAS 174560-97-5)
- 3-Carboethoxy-3-(2,4-dimethylphenyl)propiophenone (CAS 898793-73-2)
- Chloromethyl pentanoate (CAS 77877-94-2)
- Insulin Degludec Impurity 5 (CAS CATO-C4X-21575)
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