Candesartan Cilexetil Impurity 25 CAS 99464-83-2
| CAS No. | 99464-83-2 |
| Molecular Formula | C9H15ClO3 |
| Molecular Weight | 206.67 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Candesartan Cilexetil Impurity 25 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.
As a process- or degradation-related impurity, Candesartan Cilexetil Impurity 25 (CAS 99464-83-2, C9H15ClO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C9H15ClO3, Candesartan Cilexetil Impurity 25 contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 206.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C9H15ClO3 |
| Molecular Weight | 206.67 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
Related Candesartan Standards
- Candesartan Impurity 6 (CAS 142269-40-7)
- Candesartan Impurity N1 (CAS 1246817-06-0)
- Candesartan Cilexetil Impurity 36 (CAS CATO-C4X-123436)
- Candesartan Cilexetil Impurity 27 (CAS CATO-C4X-123427)
- Candesartan Cilexetil Impurity 29 (CAS 16533-45-2)
- Candesartan Cilexetil Impurity 30 (CAS 90322-71-7)
- Candesartan Cilexetil Impurity 47 (CAS CATO-C4X-123447)
- Candesartan Cilexetil Impurity 32 (CAS 62351-79-5)
Recommended Standards
- Levetiracetam impurity 8 (CAS CATO-C4X-10678)
- Pentoxifylline Impurity 31 (CAS CATO-C4X-172831)
- Levetiracetam USP Related Compound A (CAS 102767-31-7)
- Cilastatin Impurity 11 (CAS 78834-75-0)
- Dapoxetine Impurity 56 (CAS 2245197-07-1 (free base))
- Nizatidine EP Impurity I (CAS 82586-81-0)
- Cariprazine Impurity 43 (CAS 1092822-52-0)
- Methyl (2Z)-3-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]prop-2-enoate (CAS 81703-94-8)
- Benzyl 2-((2-amino-N-isopropylacetamido)methyl)pyrrolidine-1-carboxylate (CAS 1353960-05-0)
- 1,6,7-Trimethyl-3-pentyloxazolo[2,3-f]purine-2,4(1H,3H)-dione (CAS 899997-36-5)
- 2-Methyl-2,3-dihydro-1H-quinolin-4-one (CAS 30448-37-4)
- (S)-tert-Butyl 4-(2-(methoxycarbonyl)pyrrolidin-1-yl)piperidine-1-carboxylate (CAS 864291-82-7)
- 3-Fluoro-2-methyl-6-nitroaniline (CAS 485832-96-0)
- Peptide 431 (CAS CATO-CPTD788431)
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