5Alpha-Cholestane CAS 481-21-0

Purity >95%In StockPharmaceutical Standards
CAS No.481-21-0
Molecular FormulaC27H48
Molecular Weight372.67 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5Alpha-Cholestane CAS 481-21-0 chemical structure

Description

CATO manufactures 5Alpha-Cholestane 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.

CATO supplies 5Alpha-Cholestane (CAS 481-21-0), a certified reference material (molecular formula C27H48, MW 372.67 g/mol) for analytical method development and quality control.

The molecular framework of 5Alpha-Cholestane (C27H48) is characterized by an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).

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.

Physical & Chemical Properties

Molecular FormulaC27H48
Molecular Weight372.67 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>95%
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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