Calcitriol Impurity 19 CAS CATO-C4X-151019
| CAS No. | CATO-C4X-151019 |
| Molecular Formula | C39H70O4Si2 |
| Molecular Weight | 659.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Calcitriol Impurity 19 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.
Calcitriol Impurity 19 (CAS CATO-C4X-151019) is a certified pharmaceutical impurity reference standard with the molecular formula C39H70O4Si2 and a molecular weight of 659.14 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Calcitriol Impurity 19 is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 659.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C39H70O4Si2 |
| Molecular Weight | 659.14 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Calcitriol Standards
- Calcitriol Impurity 13 (CAS 169900-32-7)
- Calcitriol Impurity 18 (CAS 147125-21-1)
- Calcitriol Impurity 20 (CAS CATO-C4X-151020)
- Calcitriol Impurity 24 (CAS CATO-C4X-151024)
- Calcitriol Impurity 9 (CAS CATO-C4X-15109)
- Calcitriol Impurity 14 (CAS 140710-98-1)
- Calcitriol Impurity 17 (CAS 1883417-56-8)
- Calcitriol Impurity 8 (CAS 140710-96-9)
Recommended Standards
- Erucic anhydride (CAS 103213-60-1)
- Agaricoglyceride A (CAS 557099-51-1)
- [P,P'-1,3-Bis(di-i-propylphosphino)propane][P-1,3-bis(di-i-propylphosphino)propane]palladium(0) (CAS 123333-45-9)
- 3,4,5-Tris(dodecyloxy)benzaldehyde (CAS 117241-32-4)
- Atogepant Impurity 81 (CAS CATO-C4X-328581)
- Nilotinib Impurity 19 (CAS CATO-C4X-125619)
- Tulobuterol Impurity 8 (CAS 69240-90-0)
- 4-Methylumbelliferyl 2-Acetamido-2-deoxy-3,4-di-O-benzoyl-β-D-Galactopyranoside 6-Sulfate (CAS 154639-33-5)
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- Ethylene Oxide-13C2 Stab. W/ 0.1% Hydroquinone Discontinued. Please see O846982. (CAS 84508-46-3)
- Characteristic MSH-Tetrapeptide (CAS 4289-02-5)
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