Paricalcitol Impurity 5 CAS CATO-C4X-13875
| CAS No. | CATO-C4X-13875 |
| Molecular Formula | C27H44O3 |
| Molecular Weight | 416.64 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Paricalcitol Impurity 5 (C27H44O3) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
As a process- or degradation-related impurity, Paricalcitol Impurity 5 (CAS CATO-C4X-13875, C27H44O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Paricalcitol Impurity 5 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 | C27H44O3 |
| Molecular Weight | 416.64 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Paricalcitol Standards
- Paricalcitol 22-Z (CAS CATO-C4X-13871)
- Paricalcitol Impurity 2 (CAS 132015-95-3)
- Paricalcitol Impurity 3 (CAS 1884139-61-0)
- Paricalcitol (CAS 131918-61-1)
- Paricalcitol Impurity 38 (CAS CATO-C4X-138738)
- Paricalcitol Impurity 4 (CAS 2230789-87-2)
- Paricalcitol Impurity 43 (CAS CATO-C4X-138743)
- Paricalcitol Impurity 8 (CAS CATO-C4X-13878)
Recommended Standards
- Paricalcitol Impurity 9 (CAS 216161-87-4)
- Alfacalcidol impurity 17 (CAS 2227309-93-3)
- Calcitriol (CAS 32222-06-3)
- Calcitriol Impurity 25 (CAS 134523-84-5)
- Ensifentrine impurity 35 (CAS CATO-C4X-335335)
- Cetirizine Impurity 16 (CAS CATO-C4X-158216)
- Fruquintinib Impurity 8 (CAS CATO-C4X-30378)
- 2-(Chloromethyl)-5-(1,5-dimethyl-1H-pyrrol-2-yl)-1,3,4-oxadiazole (CAS 696604-68-9)
- 6-Bromo-2-oxindole (CAS 99365-40-9)
- 3-Bromo-5-(trifluoromethyl)benzaldehyde (CAS 477535-41-4)
- Ethyl 3,3-dicyclopropylpropanoate (CAS 1027287-49-5)
- N-((1-Ethyl-1H-pyrazol-5-yl)methyl)-1-isobutyl-5-methyl-1H-pyrazol-3-amine hydrochloride (CAS 1856100-22-5)
- 3-Oxabicyclo[4.1.0]heptan-5-one (CAS 1626336-25-1)
- [y-Glu15]-Semaglutide Impurity 134 (CAS CATO-C4X-2226134)
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