Olmesartan Impurity 16 CAS 124750-53-4
| CAS No. | 124750-53-4 |
| Molecular Formula | C33H26N4 |
| Molecular Weight | 478.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Olmesartan Impurity 16.
As a process- or degradation-related impurity, Olmesartan Impurity 16 (CAS 124750-53-4, C33H26N4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C33H26N4, Olmesartan Impurity 16 contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 478.59 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.
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.
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 | C33H26N4 |
| Molecular Weight | 478.59 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 23.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 4 |
Related Olmesartan Standards
- Olmesartan Impurity 78 (CAS 133909-97-4)
- Olmesartan Impurity 19 (CAS 144689-23-6)
- Olmesartan Impurity 85 (CAS CATO-C4X-109785)
- Olmesartan Impurity 116 (CAS 3092204-98-0)
- Olmesartan impurity 99 (CAS 1427168-36-2)
- Olmesartan Impurity 46 (CAS 155983-56-5)
- Olmesartan Impurity 33 (CAS CATO-C4X-109733)
- Olmesartan Methyl Ether (CAS 1039762-40-7)
Recommended Standards
- N-(2-Cyano-3-methylbutan-2-yl)-2-((5-(furan-2-yl)-4-oxo-3-phenyl-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)acetamide (CAS 757214-21-4)
- Hexamethylene Diisocyanate Biuret Trimer (CAS 4035-89-6)
- Betamethasone Impurity 21 (CAS 154713-07-2)
- H-Lys-Phe-Gly-Lys-OH (H-4205.0050) (CAS 114577-12-7)
- Thiamethoxam Impurity 3 (CAS 192439-46-6)
- Aceclofenac Impurity 13 (CAS CATO-C4X-153113)
- Metaraminol Impurity 85 (CAS CATO-C4X-225285)
- Estrone Impurity 12 (CAS CATO-C4X-210512)
- (S)-Methyl 2-(chloromethyl)-1-(oxetan-2-ylmethyl)-1H-benzo[d]imidazole-6-carboxylate (CAS 2230200-76-5)
- 2-(2-((1-Ethoxy-1-oxopropan-2-yl)amino)-2-oxoethoxy)acetic acid (CAS 1397000-27-9)
- 7-Chloro-5,6-dimethylpyrazolo[1,5-a]pyrimidine (CAS 61098-39-3)
- Ethyl 2-bromo-6-cyano-3-(difluoromethyl)benzoate (CAS 1806060-45-6)
- 50656-78-5 Nirtetralin Naphtho(2,3-d)-1,3-dioxole, 5-(3,4-dimethoxyphenyl)-5,6,7,8-tetrahydro-4-methoxy-6,7-bis(methoxymethyl)-, (5R,6S,7S)-rel- Naphtho(2,3-d)-1,3-dioxole, 5-(3,4-dimethoxyphenyl)-5,6,7,8-tetrahydro-4-methoxy-6,7-bis(methoxymethyl)-, (5alpha,6beta,7alpha)- (+-)-Nirtetralin (CAS 50656-78-5)
- Des-Ser34-Gly33Tirzepatide (CAS CATO-CPTD788941)
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