Cholecalciferol Impurity 29 CAS CATO-C4X-158629
| CAS No. | CATO-C4X-158629 |
| Molecular Formula | C33H58OSi |
| Molecular Weight | 498.90 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 498.90 g/mol gives Cholecalciferol Impurity 29 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Cholecalciferol Impurity 29 (CAS CATO-C4X-158629, C33H58OSi) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Cholecalciferol Impurity 29 (C33H58OSi) contains a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 498.90 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Cholecalciferol Impurity 29 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 | C33H58OSi |
| Molecular Weight | 498.90 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Cholecalciferol Standards
- Cholecalciferol Impurity 12 (CAS 156965-15-0)
- Cholecalciferol Impurity 35 (CAS CATO-C4X-158635)
- Cholecalciferol Sulfate (CAS 10529-43-8)
- Cholecalciferol Impurity 30 (CAS CATO-C4X-158630)
- Cholecalciferol EP Impurity F (Cholecalciferol Butyrate) (CAS 31316-20-8)
- Cholecalciferol Impurity 25 (CAS CATO-C4X-158625)
- Cholecalciferol Impurity 27 (CAS CATO-C4X-158627)
- Cholecalciferol Impurity 31 (CAS CATO-C4X-158631)
Recommended Standards
- N-(4-Methoxyphenyl)-2-{N-[3-(trifluoromethyl)phenyl]4-chlorobenzenesulfonamido}acetamide (CAS 337922-19-7)
- 1-Hydroxy-4-((4-(2-hydroxyethyl)phenyl)amino)anthracene-9,10-dione (CAS 71335-86-9)
- [(3β)-Cholesta-5,24-dien-3-yloxy](1,1-dimethylethyl)dimethylsilane (CAS 220150-72-1)
- Avanafil Impurity 51 (CAS CATO-C4X-111851)
- Paclitaxel EP Impurity C (CAS 153415-45-3)
- Dapoxetine Impurity 19 (CAS 156453-53-1)
- Ceftizoxime Impurity 68 (CAS CATO-C4X-179368)
- 1-[1-(2-methanesulfonylethyl)-3,5-dimethyl-1h-pyrazol-4-yl]propan-1-one (CAS 1282827-40-0)
- Vildagliptin-d7 (CAS 1133208-42-0)
- Alternariol-d2 (CAS CATO-CCAD302675)
- 3-Amino-4-(cyclopropylmethyl)phenol (CAS 1243392-28-0)
- 4-(4-Methylphenoxy)-2-{[(4-methylphenyl)methyl]sulfanyl}-5,6,7,8-tetrahydroquinazoline (CAS 343373-58-0)
- 5-Bromo-2-chloro-4-methylpyrimidine (CAS 633328-95-7)
- Liraglutide Impurity 19 TFA Salt (CAS CATO-C4X-199219)
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