Estradiol Impurity 6 CAS 1423-97-8

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1423-97-8
Molecular FormulaC18H20O2
Molecular Weight268.35 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Estradiol Impurity 6 CAS 1423-97-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 268.35 g/mol gives Estradiol Impurity 6 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Estradiol Impurity 6 (CAS 1423-97-8), a pharmacopoeial impurity reference standard (molecular formula C18H20O2, MW 268.35 g/mol) used for the identification and quantification of trace impurities in APIs.

Estradiol Impurity 6 (C18H20O2) contains a steroid core, 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.

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.

CATO manufactures Estradiol Impurity 6 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC18H20O2
Molecular Weight268.35 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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