Olmesartan Impurity 65 CAS 2101308-74-9
| CAS No. | 2101308-74-9 |
| Molecular Formula | C44H40N6O3 |
| Molecular Weight | 700.83 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Olmesartan Impurity 65 (CAS 2101308-74-9), a pharmacopoeial impurity reference standard (molecular formula C44H40N6O3, MW 700.83 g/mol) used for the identification and quantification of trace impurities in APIs.
Olmesartan Impurity 65 (C44H40N6O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C44H40N6O3 |
| Molecular Weight | 700.83 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) | 28.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 6 |
Related Olmesartan Standards
- Olmesartan impurity 101 (CAS 2101308-73-8)
- Olmesartan impurity 102 (CAS CATO-C4X-1097102)
- Olmesartan Impurity 66 (CAS 157356-74-6)
- Olmesartan Impurity 49 (CAS 1418133-29-5)
- Olmesartan impurity 11 (CAS 761404-85-7)
- Olmesartan Impurity 80 (CAS 752179-89-8)
- Olmesartan Impurity 42 (CAS 1227626-50-7)
- Olmesartan Impurity 83 (CAS CATO-C4X-109783)
Recommended Standards
- PEG12-Tos (CAS 1050500-41-8)
- Bis-sulfone-PEG3-Azide (CAS 1802908-01-5)
- Trilaciclib Impurity 4 (CAS CATO-C4X-30444)
- 2-Ethoxy-1-[[2'-[2-(trityl)-2H-tetrazol-5-yl][1,1'-biphenyl]-4-yl]methyl]-1H-benzimidazole-4-carboxylic Acid Methyl Ester-d4 (Candesartan Impurity) (CAS 1793997-59-7)
- Sitafloxacin impurity 90 (CAS 112062-51-8)
- Diltiazem Impurity 16 (CAS 3036581-85-5)
- Topiroxostat Impurity 9 (CAS 4329-78-6)
- (R)-2-((tert-butoxycarbonyl)amino)-3-(diethoxyphosphoryl)propanoic acid (CAS 1159501-66-2)
- Uridine-2’,3’-Cyclic Monophosphate Sodium Salt (CAS 15718-50-0)
- 7-Bromo-1H,3H,4H-pyrrolo[2,1-c][1,4]oxazine-1,3-dione (CAS 2092438-66-7)
- Baricitinib Impurity 74 (CAS CATO-C4X-226074)
- 1-(((Tert-butoxycarbonyl)amino)methyl)spiro[2.5]Octane-1-carboxylic acid (CAS 724773-53-9)
- cis,rac-(1R,2R)-2-(pyridin-2-yl)cyclopentan-1-ol (CAS 94929-81-4)
- Semaglutide Impurity 188 (CAS CATO-C4X-2226188)
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