Irbesartan Impurity 43 CAS CATO-C4X-166643
| CAS No. | CATO-C4X-166643 |
| Molecular Formula | C11H18N2O |
| Molecular Weight | 194.27 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 Irbesartan Impurity 43.
CATO supplies Irbesartan Impurity 43 (CAS CATO-C4X-166643), a pharmacopoeial impurity reference standard (molecular formula C11H18N2O, MW 194.27 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Irbesartan Impurity 43 (C11H18N2O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H18N2O |
| Molecular Weight | 194.27 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Irbesartan Standards
- Irbesartan Impurity 28 (CAS 194984-24-2)
- Irbesartan impurity 37 (CAS 1415462-83-7)
- Irbesartan Impurity 2 (CAS 177219-40-8)
- Irbesartan Impurity 42 (CAS CATO-C4X-166642)
- Irbesartan Impurity 44 (CAS CATO-C4X-166644)
- Irbesartan Impurity 46 (CAS CATO-C4X-166646)
- Irbesartan Impurity 48 (CAS 253269-07-7)
- Irbesartan Impurity 23 (CAS CATO-C4X-166623)
Recommended Standards
- Tiotropium EP Impurity F (CAS 704-38-1)
- Propofol Impurity 22 (CAS 1988-10-9)
- Dyclonine Impurity 12 (CAS 91763-92-7)
- Itopride Impurity 3 (CAS 20059-73-8)
- Sitagliptin Impurity 167 (CAS 1840966-95-1)
- Lusutrombopag Impurity 55 (CAS CATO-C4X-208455)
- Flunixin Meglumine EP Impurity B (CAS 54396-44-0)
- 3’,4’-Dihydro-2’H-spiro[imidazolidine-4,1’-naphthalene]-2,5-dione (CAS 57998-96-6)
- tert-butyl 2-{[(2-aminophenyl)carbonyloxy]methyl}pyrrolidine-1-carboxylate (CAS 1240526-60-6)
- 5-Nitro-1H-benzo[d]imidazole-7-carbaldehyde (CAS 1804059-35-5)
- 898789-38-3 1-(3-Bromophenyl)-3-(2-methylphenyl)propan-1-one DTXSID70644016 (CAS 898789-38-3)
- methyl 2-(benzyloxycarbonylamino)cyclopropanecarboxylate (CAS 2104635-40-5)
- (3-(4-Fluorophenyl)-1h-pyrazol-5-yl)methanol (CAS 1137165-21-9)
- Semaglutide impurity 41 (CAS CATO-C4X-222641)
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