5α-PREGNAN-3β, 11β, 17, 21-TETROL-20-ONE CAS 651-43-4

Purity 97%+In StockPharmaceutical Standards
CAS No.651-43-4
Molecular FormulaC21H34O5
Molecular Weight366.49 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5α-PREGNAN-3β, 11β, 17, 21-TETROL-20-ONE CAS 651-43-4 chemical structure

Description

Structurally, 5α-PREGNAN-3β, 11β, 17, 21-TETROL-20-ONE (C21H34O5) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 366.49 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

CATO supplies 5α-PREGNAN-3β, 11β, 17, 21-TETROL-20-ONE (CAS 651-43-4), a certified reference material (molecular formula C21H34O5, MW 366.49 g/mol) for analytical method development and quality control.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 5α-PREGNAN-3β, 11β, 17, 21-TETROL-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 FormulaC21H34O5
Molecular Weight366.49 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
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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