Olmesartan Impurity 44 CAS CATO-C4X-109744
| CAS No. | CATO-C4X-109744 |
| Molecular Formula | C41H34N6O4 |
| Molecular Weight | 674.75 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 44.
Olmesartan Impurity 44 (CAS CATO-C4X-109744) is a certified pharmaceutical impurity reference standard with the molecular formula C41H34N6O4 and a molecular weight of 674.75 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Olmesartan Impurity 44 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 674.75 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
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 | C41H34N6O4 |
| Molecular Weight | 674.75 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) | 28.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
Related Olmesartan Standards
- Olmesartan Impurity 43 (CAS 1227664-85-8)
- Olmesartan N2-Trityl Anhydro Acid (CAS 1797891-24-7)
- Olmesartan Impurity 47 (CAS 1048948-15-7)
- Olmesartan impurity 100 (CAS 761404-82-4)
- Olmesartan Medoxomil Impurity 26 (CAS 1392475-91-0)
- Olmesartan impurity 102 (CAS CATO-C4X-1098102)
- Olmesartan Impurity 109 (CAS 1867269-66-6)
- Olmesartan Impurity 42 (CAS 1227626-50-7)
Recommended Standards
- Posaconazole Impurity 40 (CAS 1370190-94-5)
- 2,3,4,6-Tetra-o-benzyl-alpha-d-glucopyranosyl n,n,n',n'-tetramethylphosphorodiamidate (ca. 20% In benzene) (CAS 143520-19-8)
- DBCO-PEG4-Maleimide (CAS 1480516-75-3)
- 4,4',4'',4'''-(7-(Tert-butyl)pyrene-1,3,5,9-tetrayl)tetrabenzaldehyde (CAS 1422738-48-4)
- Lacosamide Impurity 33 (CAS 196601-67-9)
- Fluvastatin Impurity 19 (CAS CATO-C4X-165119)
- Brivaracetam Impurity 156 (CAS 2766177-03-9)
- 1-((Benzyloxy)carbonyl)-5-methylpiperidine-2-carboxylic acid (CAS 129769-20-6)
- N-(4-Mesitylthiazol-2-yl)-2-(methylthio)nicotinamide (CAS 771511-45-6)
- 4-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzohydrazide (CAS 170966-09-3)
- 4-(Chloromethyl)-1-methyl-2-(trifluoromethyl)benzene (CAS 1261584-27-3)
- 6-(4-Chlorophenyl)-2-methylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 85841-04-9)
- 7α-[9-(4,4,5,5,5-Pentafluoropentylsulfanyl)nonyl]estra-1,3,5(10)-triene-3,17β-diol (CAS 153004-31-0)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
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