Calcitriol Impurity 65 CAS CATO-C4X-151065
| CAS No. | CATO-C4X-151065 |
| Molecular Formula | C27H42O2 |
| Molecular Weight | 398.62 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Calcitriol Impurity 65 (CAS CATO-C4X-151065) is a certified pharmaceutical impurity reference standard with the molecular formula C27H42O2 and a molecular weight of 398.62 g/mol.
Structurally, Calcitriol Impurity 65 (C27H42O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 398.62 g/mol, it falls into the moderately-high-molecular-weight range. 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 certified reference material (CRM), Calcitriol Impurity 65 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 | C27H42O2 |
| Molecular Weight | 398.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Calcitriol Standards
- Calcitriol Impurity 30 (CAS 69389-87-3)
- Calcitriol Impurity 63 (CAS CATO-C4X-151063)
- Calcitriol Impurity 64 (CAS CATO-C4X-151064)
- Calcitriol Impurity 34 (CAS CATO-C4X-151034)
- 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)
Recommended Standards
- Trihexyphenidyl Impurity 18 (CAS CATO-C4X-185718)
- Adipic Acid, Decyloctyl Ester (CAS 110-29-2)
- Dinonyl Adipate (CAS 151-32-6)
- Alfacalcidol Impurity 28 (CAS 67869-32-3)
- Lemborexant Impurity 31 (CAS CATO-C4X-304231)
- Micafungin Impurity 26 (CAS CATO-C4X-169526)
- (7R)-Sitafloxacin Impurity 13 (CAS 127199-44-4)
- 3-Chloro-5-ethoxy-4-isopropoxyphenylboronic acid (CAS 1701449-15-1)
- (E)-11-(bromomethylene)-3-fluoro-6,11-dihydrodibenzo[b,e]oxepine (CAS 710348-97-3)
- 2-(4-Fluoro-2-methoxy-5-nitrophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2488604-79-9)
- (2R)-2-(difluoromethyl)piperazine (CAS 817554-43-1)
- Cefpodoxime Proxetil Impurity 29 (CAS CATO-C4X-157929)
- 5-(5,5-Dimethyl-1,3-dioxan-2-yl)-α-[5-(5,5-dimethyl-1,3-dioxan-2-yl)-2-methoxyphenyl]-2-methoxy-α-(4-methoxyphenyl)benzenemethanol (CAS 235106-88-4)
- Semaglutide Impurity 6 (CAS 62-57-7)
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