Vitamin K1 Impurity 21 CAS 562836-92-4

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.562836-92-4
Molecular FormulaC20H41ClO
Molecular Weight332.99 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Vitamin K1 Impurity 21 CAS 562836-92-4 chemical structure

Description

As a certified reference material (CRM), Vitamin K1 Impurity 21 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.

Vitamin K1 Impurity 21 (CAS 562836-92-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H41ClO and a molecular weight of 332.99 g/mol.

Owing to a hydroxyl group, an ether linkage, chlorine substitution, Vitamin K1 Impurity 21 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 332.99 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 FormulaC20H41ClO
Molecular Weight332.99 g/mol
Purity>95%
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.)1984
Halogen ContentCl-containing

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