Etoposide Impurity 41 CAS CATO-C4X-202441

Purity 95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-202441
Molecular FormulaC39H38O17
Molecular Weight778.71 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Etoposide Impurity 41 CAS CATO-C4X-202441 chemical structure

Description

CATO supplies Etoposide Impurity 41 (CAS CATO-C4X-202441), a pharmacopoeial impurity reference standard (molecular formula C39H38O17, MW 778.71 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Etoposide Impurity 41 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 778.71 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

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 FormulaC39H38O17
Molecular Weight778.71 g/mol
Purity95%
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)21.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

Related Etoposide Standards

Recommended Standards

Why CATO?