Maxacalcitol Impurity 25 CAS 681433-99-8
| CAS No. | 681433-99-8 |
| Molecular Formula | C17H32O3 |
| Molecular Weight | 284.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Maxacalcitol Impurity 25 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Maxacalcitol Impurity 25 (CAS 681433-99-8, C17H32O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Maxacalcitol Impurity 25 (C17H32O3) is characterized by a carboxylic acid 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. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), Maxacalcitol 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.
Physical & Chemical Properties
| Molecular Formula | C17H32O3 |
| Molecular Weight | 284.43 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1985 |
Related Maxacalcitol Standards
- Maxacalcitol Impurity 22 (CAS CATO-C4X-278822)
- Maxacalcitol Impurity 23 (CAS CATO-C4X-278823)
- Maxacalcitol Impurity 17 (CAS 147725-62-0)
- Maxacalcitol Impurity 18 (CAS 147725-63-1)
- Maxacalcitol Impurity 9 (CAS 103909-73-5)
- Maxacalcitol Impurity 2 (CAS 192573-33-4)
- Maxacalcitol Impurity 24 (CAS CATO-C4X-278824)
- Maxacalcitol Impurity 21 (CAS 192573-36-7)
Recommended Standards
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- H-β-(3-Benzothienyl)-Ala-OH (CAS 72120-71-9)
- 3,4-Dichloro-6-(difluoromethyl)pyridin-2-amine (CAS 1805996-17-1)
- Tert-butyl (2-(1-methyl-1H-pyrazol-4-yl)ethyl)carbamate (CAS 1188264-99-4)
- Hexapeptide-9 (CAS 1228371-11-6)
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