Irbesartan impurity 39 CAS 1057501-99-1
| CAS No. | 1057501-99-1 |
| Molecular Formula | C21H19N3O |
| Molecular Weight | 329.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C21H19N3O, Irbesartan impurity 39 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 329.40 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.
Irbesartan impurity 39 (CAS 1057501-99-1) is a certified pharmaceutical impurity reference standard with the molecular formula C21H19N3O and a molecular weight of 329.40 g/mol.
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.
As a certified reference material (CRM), Irbesartan impurity 39 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 | C21H19N3O |
| Molecular Weight | 329.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
Related Irbesartan Standards
- Irbesartan Impurity 47 (CAS CATO-C4X-166647)
- Irbesartan Impurity 31 (CAS 945540-26-1)
- Irbesartan Impurity N10 (CAS 14309-25-2)
- Irbesartan Impurity 5 (CAS 152708-24-2)
- Irbesartan impurity 40 (CAS CATO-C4X-166640)
- Irbesartan Impurity 26 (CAS CATO-C4X-166626)
- Irbesartan Impurity 45 (CAS CATO-C4X-166645)
- Irbesartan Impurity 7 (CAS 138401-24-8)
Recommended Standards
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- Peramivir Impurity 130 (CAS CATO-C4X-1833130)
- Papaverine Impurity 35 (CAS 16637-56-2)
- Atosiban Impurity 29 (CAS CATO-C4X-229329)
- Ribavirin Impurity 40 (CAS 39215-01-5)
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- Methyl 2-bromo-3-(4-fluorophenyl)propanoate (CAS 82455-06-9)
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