Olmesartan Impurity 81 CAS 391052-99-5
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 391052-99-5 |
| Molecular Formula | C48H42N6O5 |
| Molecular Weight | 782.88 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Olmesartan Impurity 81 (CAS 391052-99-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C48H42N6O5. Molecular weight: 782.88 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C48H42N6O5 |
| Molecular Weight | 782.88 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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 |
| Degree of Unsaturation (DBE) | 31.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 6 |
Related Olmesartan Standards
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- Olmesartan Impurity 101 (CAS CATO-C4X-1097101)
- Olmesartan Impurity 100 (CAS CATO-C4X-1097100)
- Olmesartan Impurity 95 (CAS CATO-C4X-109795)
- Olmesartan Impurity 113 (CAS CATO-C4X-1097113)
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- Olmesartan EP impurity D (CAS 1020157-01-0)
Recommended Standards
- Fulvestrant-17-Glucuronide (CAS 261506-28-9)
- Dehydro Olmesartan-2-trityl Medoxomil (CAS 1391052-99-5)
- Fulvestrant-3-Glucuronide (CAS 261506-27-8)
- Pregabalin Impurity 43 (CAS 1484267-23-3)
- Landiolol Impurity 61 (CAS CATO-C4X-262161)
- Azafenidin (CAS 68049-83-2)
- 1-Bromo-3-(difluoromethyl)-2-fluorobenzene (CAS 1204333-52-7)
- (S)-tert-Butyl 2-((tert-butoxycarbonyl)amino)-4-mercaptobutanoate (CAS 630108-94-0)
- 5-Cyclopropoxy-6-fluoro-N-methylpyridin-3-amine (CAS 1243449-19-5)
- Acetyl Dipeptide-1 (CAS 196604-48-5)
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 13829788188 / jacky.chen@cato-chem.com