6alpha-Methoxymethyl Exemestane Impurity CAS 881896-95-3

Purity 97%+In StockPharmaceutical Standards
CAS No.881896-95-3
Molecular FormulaC21H28O3
Molecular Weight328.45 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

6alpha-Methoxymethyl Exemestane Impurity CAS 881896-95-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 328.45 g/mol gives 6alpha-Methoxymethyl Exemestane Impurity distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 6alpha-Methoxymethyl Exemestane Impurity (CAS 881896-95-3), a certified reference material (molecular formula C21H28O3, MW 328.45 g/mol) for analytical method development and quality control.

6alpha-Methoxymethyl Exemestane Impurity (C21H28O3) 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), 6alpha-Methoxymethyl Exemestane Impurity 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.

Physical & Chemical Properties

Molecular FormulaC21H28O3
Molecular Weight328.45 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987

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