Etoposide EP Impurity P CAS 117669-31-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.117669-31-5
Molecular FormulaC21H16O8
Molecular Weight396.35 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Etoposide EP Impurity P CAS 117669-31-5 chemical structure

Description

As a certified reference material (CRM), Etoposide EP Impurity P 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.

CATO supplies Etoposide EP Impurity P (CAS 117669-31-5), a pharmacopoeial impurity reference standard (molecular formula C21H16O8, MW 396.35 g/mol) used for the identification and quantification of trace impurities in APIs.

Etoposide EP Impurity P (C21H16O8) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC21H16O8
Molecular Weight396.35 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>95%
StorageStore at 2-8°C, 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)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990

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