Eldecalcitol Impurity 28 CAS 189102-76-9

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.189102-76-9
Molecular FormulaC25H52O2Si2
Molecular Weight440.85 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Eldecalcitol Impurity 28 CAS 189102-76-9 chemical structure

Description

As a process- or degradation-related impurity, Eldecalcitol Impurity 28 (CAS 189102-76-9, C25H52O2Si2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Eldecalcitol Impurity 28 (C25H52O2Si2) contains a carboxylic acid group, 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 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC25H52O2Si2
Molecular Weight440.85 g/mol
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)0.0
CAS Registry Year (est.)2011

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