Olmesartan Impurity 29 CAS 76-83-5
| CAS No. | 76-83-5 |
| Molecular Formula | C19H15Cl |
| Molecular Weight | 278.78 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Olmesartan Impurity 29 (CAS 76-83-5), a pharmacopoeial impurity reference standard (molecular formula C19H15Cl, MW 278.78 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C19H15Cl, Olmesartan Impurity 29 contains chlorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 278.78 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), Olmesartan Impurity 29 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 | C19H15Cl |
| Molecular Weight | 278.78 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
Related Olmesartan Standards
- Olmesartan Impurity 76 (CAS 161952-66-5)
- Olmesartan impurity 88 (CAS CATO-C4X-109788)
- Olmesartan impurity 103 (CAS 93641-16-8)
- Olmesartan Impurity 57 (CAS CATO-C4X-109757)
- Olmesartan Impurity 45 (CAS 866721-92-8)
- Olmesartan Impurity 59 (CAS 971-85-7)
- Olmesartan Impurity 32 (CAS 1092980-85-2)
- Olmesartan Impurity 36 (CAS 1092980-84-1)
Recommended Standards
- tert-Butyl (4-((3-chloropropyl)amino)-4-oxobutyl)carbamate (CAS 92611-33-1)
- Bifonazole Impurity 9 (CAS 7515-73-3)
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- Clotrimazole Impurity 27 (CAS 56153-60-7)
- Cefmetazole Impurity 20 (CAS CATO-C4X-150720)
- Epinastine Impurity N8 (CAS 74860-00-7)
- Apremilast Impurity 47 (CAS 1956-36-1)
- 2-(7-Bromoquinolin-3-yl)isoindoline-1,3-dione (CAS 1375108-38-5)
- 4-(2,4-Dichlorophenyl)-5-(prop-2-en-1-ylsulfanyl)-1,2,3-thiadiazole (CAS 338409-12-4)
- Ethyl 2-(2-acetyl-3,5-dihydroxyphenyl)acetate (CAS 19054-27-4)
- 4-(But-3-yn-1-yloxy)benzoic acid (CAS 1017024-01-9)
- 2-Bromo-3,4-difluoropyridine (CAS 1807197-86-9)
- N-(2-Furylmethyl)-N-(3-methylbutyl)amine (CAS 4462-11-7)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com