Olmesartan impurity 11 CAS 761404-85-7
| CAS No. | 761404-85-7 |
| Molecular Formula | C43H40N6O3 |
| Molecular Weight | 688.82 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.
Olmesartan impurity 11 (CAS 761404-85-7) is a certified pharmaceutical impurity reference standard with the molecular formula C43H40N6O3 and a molecular weight of 688.82 g/mol.
Based on its molecular formula C43H40N6O3, Olmesartan impurity 11 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 688.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Olmesartan impurity 11 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 | C43H40N6O3 |
| Molecular Weight | 688.82 g/mol |
| Purity | 97%+ |
| 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) | 27.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 6 |
Related Olmesartan Standards
- Olmesartan Impurity 80 (CAS 752179-89-8)
- Olmesartan Impurity 42 (CAS 1227626-50-7)
- Olmesartan Impurity 83 (CAS CATO-C4X-109783)
- Olmesartan Impurity 109 (CAS 1867269-66-6)
- Olmesartan impurity 102 (CAS CATO-C4X-1097102)
- Olmesartan Impurity 66 (CAS 157356-74-6)
- Olmesartan Impurity 65 (CAS 2101308-74-9)
- Olmesartan impurity 101 (CAS 2101308-73-8)
Recommended Standards
- (2S,3S,4aR,8aR)-2,3-Bis[2-(diphenylphosphino)phenyl]-1,4-dimethyldecahydroquinoxaline (CAS 1562581-18-3)
- Adapalene Impurity 15 (CAS CATO-C4X-180915)
- Fmoc-Arg(c-Pr,Pbf)-OH (CAS 1060769-41-6)
- (1R)-3,3'-Di(pyren-1-yl)-[1,1'-binaphthalene]-2,2'-diol (CAS 1854074-51-3)
- Carbetocin Impurity 17 (CAS CATO-C4X-191117)
- Fluticasone Impurity 100 (CAS 2408725-66-4)
- Deoxycholic acid Impurity 38 (CAS CATO-C4X-335938)
- 3-Nitro-1-tosyl-1H-1,2,4-triazole (CAS 77451-51-5)
- 5-Methyl-7-hydroxy-1-indanone (CAS 68293-32-3)
- 2-(2-Hydroxyethyl)-5-nitroisoindoline-1,3-dione (CAS 55080-96-1)
- (3-methylpyrazin-2-yl)methanamine (CAS 205259-75-2)
- N1-(1-methylpiperidin-4-yl)benzene-1,4-diamine (CAS 1086392-72-4)
- 1-(2-(Methylsulfonyl)ethyl)cyclopentane-1-carboxylic acid (CAS 1342219-08-2)
- Peptide Impurity 70 TFA Salt (CAS CATO-CPTD788570)
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