5β-Cholestane CAS 481-20-9

Purity >90%In StockPharmaceutical Standards
CAS No.481-20-9
Molecular FormulaC27H48
Molecular Weight372.67 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5β-Cholestane CAS 481-20-9 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.

5β-Cholestane (CAS 481-20-9), molecular formula C27H48 and molecular weight 372.67 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C27H48, 5β-Cholestane contains an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 372.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

As a certified reference material (CRM), 5β-Cholestane 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 FormulaC27H48
Molecular Weight372.67 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>90%
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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Why CATO?