Maxacalcitol Impurity N1 CAS 81522-68-1
| CAS No. | 81522-68-1 |
| Molecular Formula | C33H51O3PSi2 |
| Molecular Weight | 582.90 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Maxacalcitol Impurity N1 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, Maxacalcitol Impurity N1 (CAS 81522-68-1, C33H51O3PSi2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Maxacalcitol Impurity N1 (C33H51O3PSi2) is characterized by a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C33H51O3PSi2 |
| Molecular Weight | 582.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
Related Maxacalcitol Standards
- Maxacalcitol Impurity 45 (CAS 227961-44-6)
- Maxacalcitol Impurity 46 (CAS CATO-C4X-151046)
- Maxacalcitol Impurity 49 (CAS 496046-11-8)
- Maxacalcitol Impurity 50 (CAS CATO-C4X-151050)
- Maxacalcitol Impurity 14 (CAS 496046-06-1)
- Maxacalcitol Impurity 15 (CAS 215929-37-6)
- Maxacalcitol Impurity 16 (CAS 338956-85-7)
- Maxacalcitol Impurity 48 (CAS 127492-07-3)
Recommended Standards
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- Semaglutide impurity 81 (CAS CATO-C4X-222681)
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