Fulvestrant Impurity 26 CAS CATO-C4X-191726

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-191726
Molecular FormulaC60H94O7
Molecular Weight927.38 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Fulvestrant Impurity 26 CAS CATO-C4X-191726 chemical structure

Description

CATO supplies Fulvestrant Impurity 26 (CAS CATO-C4X-191726), a pharmacopoeial impurity reference standard (molecular formula C60H94O7, MW 927.38 g/mol) used for the identification and quantification of trace impurities in APIs.

Fulvestrant Impurity 26 (C60H94O7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

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 FormulaC60H94O7
Molecular Weight927.38 g/mol
Purity97%+
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)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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