Candesartan Cilexetil Impurity 32 CAS 62351-79-5
| CAS No. | 62351-79-5 |
| Molecular Formula | C12H13NO6 |
| Molecular Weight | 267.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 267.23 g/mol gives Candesartan Cilexetil Impurity 32 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Candesartan Cilexetil Impurity 32 (CAS 62351-79-5, C12H13NO6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Candesartan Cilexetil Impurity 32 (C12H13NO6) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 267.23 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H13NO6 |
| Molecular Weight | 267.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 1 |
Related Candesartan Standards
- Candesartan Cilexetil Impurity 47 (CAS CATO-C4X-123447)
- Candesartan Impurity 1 (CAS CATO-C4X-15721)
- Candesartan Cilexetil Impurity 28 (CAS 2248319-77-7)
- Candesartan Cilexetil Impurity 29 (CAS 16533-45-2)
- Candesartan Cilexetil Impurity 30 (CAS 90322-71-7)
- Candesartan Cilexetil Impurity 27 (CAS CATO-C4X-123427)
- Candesartan Cilexetil Impurity 31 (CAS CATO-C4X-123431)
- Candesartan Cilexetil Impurity 36 (CAS CATO-C4X-123436)
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