(3β,20S)-Pregn-5-ene-3,17,20-triol CAS 903-67-3

Purity 97%+In StockPharmaceutical Standards
CAS No.903-67-3
Molecular FormulaC21H34O3
Molecular Weight334.49 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3β,20S)-Pregn-5-ene-3,17,20-triol CAS 903-67-3 chemical structure

Description

The molecular framework of (3β,20S)-Pregn-5-ene-3,17,20-triol (C21H34O3) 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 supplies (3β,20S)-Pregn-5-ene-3,17,20-triol (CAS 903-67-3), a certified reference material (molecular formula C21H34O3, MW 334.49 g/mol) for analytical method development and quality control.

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.

CATO manufactures (3β,20S)-Pregn-5-ene-3,17,20-triol 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 FormulaC21H34O3
Molecular Weight334.49 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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