4α-Methyl-5α-cholest-7-en-3-one CAS 2789-43-7

Purity 97%+In StockPharmaceutical Standards
CAS No.2789-43-7
Molecular FormulaC28H46O
Molecular Weight398.66 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4α-Methyl-5α-cholest-7-en-3-one CAS 2789-43-7 chemical structure

Description

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.

4α-Methyl-5α-cholest-7-en-3-one (CAS 2789-43-7), molecular formula C28H46O and molecular weight 398.66 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4α-Methyl-5α-cholest-7-en-3-one (C28H46O) is characterized by a steroid core, a hydroxyl group, an ether linkage. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

CATO manufactures 4α-Methyl-5α-cholest-7-en-3-one 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 FormulaC28H46O
Molecular Weight398.66 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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Why CATO?