Calcitriol Impurity 24 CAS CATO-C4X-151024
| CAS No. | CATO-C4X-151024 |
| Molecular Formula | C39H70O4Si2 |
| Molecular Weight | 659.14 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 24.
CATO supplies Calcitriol Impurity 24 (CAS CATO-C4X-151024), a pharmacopoeial impurity reference standard (molecular formula C39H70O4Si2, MW 659.14 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Calcitriol Impurity 24 (C39H70O4Si2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Calcitriol Impurity 24 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 | 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 19 (CAS CATO-C4X-151019)
- Calcitriol Impurity 20 (CAS CATO-C4X-151020)
- 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
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- Erucic anhydride (CAS 103213-60-1)
- Insulin Degludec Impurity 7 (CAS CATO-C4X-21577)
- Tirofiban Impurity 9 (CAS 2250244-28-9)
- Peramivir Impurity 102 (CAS CATO-C4X-1833102)
- (cis-7,10,13,16,19)-Docosapentaenoic acid-D5 (CAS 1215168-70-9)
- Z-Asp-Gln-Met-Asp-AFC (CAS 1926163-45-2)
- (1r)-1-(3-Bromothiophen-2-yl)ethan-1-ol (CAS 1344922-31-1)
- 2-(7-Bromo-5-fluoro-1H-indol-3-yl)acetic acid (CAS 1227598-38-0)
- 22-alpha-Hydroxy Cholesterol (CAS 17954-98-2)
- (R,R)-BDPP (CAS 96183-46-9)
- Myristoyl Pentapeptide -4 acetate (CAS 959610-30-1(free base))
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