5β-PREGNAN-3α, 17-DIOL-20-ONE CAS 570-52-5

Purity 97%+In StockPharmaceutical Standards
CAS No.570-52-5
Molecular FormulaC21H34O3
Molecular Weight334.49 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5β-PREGNAN-3α, 17-DIOL-20-ONE CAS 570-52-5 chemical structure

Description

The occurrence of 5β-PREGNAN-3α, 17-DIOL-20-ONE is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5β-PREGNAN-3α, 17-DIOL-20-ONE (CAS 570-52-5), molecular formula C21H34O3 and molecular weight 334.49 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a steroid core, a hydroxyl group, an ether linkage, 5β-PREGNAN-3α, 17-DIOL-20-ONE is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 334.49 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), 5β-PREGNAN-3α, 17-DIOL-20-ONE 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 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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Why CATO?