Maxacalcitol Impurity 44 CAS 227961-42-4

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.227961-42-4
Molecular FormulaC21H42O3Si2
Molecular Weight398.73 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Maxacalcitol Impurity 44 CAS 227961-42-4 chemical structure

Description

As a certified reference material (CRM), Maxacalcitol Impurity 44 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.

Maxacalcitol Impurity 44 (CAS 227961-42-4) is a certified pharmaceutical impurity reference standard with the molecular formula C21H42O3Si2 and a molecular weight of 398.73 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, Maxacalcitol Impurity 44 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 398.73 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.

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.

Physical & Chemical Properties

Molecular FormulaC21H42O3Si2
Molecular Weight398.73 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)2022

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