Telmisartan impurity 73 CAS CATO-C4X-135973
| CAS No. | CATO-C4X-135973 |
| Molecular Formula | C15H12O4 |
| Molecular Weight | 256.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Telmisartan impurity 73 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.
Telmisartan impurity 73 (CAS CATO-C4X-135973) is a certified pharmaceutical impurity reference standard with the molecular formula C15H12O4 and a molecular weight of 256.25 g/mol.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Telmisartan impurity 73 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 256.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C15H12O4 |
| Molecular Weight | 256.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Telmisartan Standards
- Telmisartan impurity 75 (CAS CATO-C4X-135975)
- Telmisartan Impurity 91 (CAS CATO-C4X-135991)
- Telmisartan Impurity 16 (CAS 675882-71-0)
- Telmisartan Impurity N7 (CAS 959987-48-5)
- Telmisartan Impurity 96 (CAS CATO-C4X-135996)
- Telmisartan Impurity 97 (CAS CATO-C4X-135997)
- Telmisartan Impurity 7 (CAS 17103-25-2)
- Telmisartan impurity 74 (CAS CATO-C4X-135974)
Recommended Standards
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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