Calcitriol impurity 53 CAS CATO-C4X-151053
| CAS No. | CATO-C4X-151053 |
| Molecular Formula | C26H42O3 |
| Molecular Weight | 402.61 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Calcitriol impurity 53.
Calcitriol impurity 53 (CAS CATO-C4X-151053) is a certified pharmaceutical impurity reference standard with the molecular formula C26H42O3 and a molecular weight of 402.61 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, Calcitriol impurity 53 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 402.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Calcitriol impurity 53 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 | C26H42O3 |
| Molecular Weight | 402.61 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 Calcitriol Standards
- Calcitriol Impurity 10 (CAS 65445-15-0)
- Calcitriol Impurity 11 (CAS 41461-13-6)
- Calcitriol Impurity 33 (CAS 104651-70-9)
- Calcitriol Impurity 61 (CAS CATO-C4X-151061)
- Calcitriol Impurity 30 (CAS 69389-87-3)
- Calcitriol Impurity 63 (CAS CATO-C4X-151063)
- Calcitriol Impurity 64 (CAS CATO-C4X-151064)
- Calcitriol Impurity 65 (CAS CATO-C4X-151065)
Recommended Standards
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