5-ANDROSTEN-3β, 19-DIOL-17-ONE CAS 2857-45-6

Purity 97%+In StockPharmaceutical Standards
CAS No.2857-45-6
Molecular FormulaC19H28O3
Molecular Weight304.42 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-ANDROSTEN-3β, 19-DIOL-17-ONE CAS 2857-45-6 chemical structure

Description

The occurrence of 5-ANDROSTEN-3β, 19-DIOL-17-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.

5-ANDROSTEN-3β, 19-DIOL-17-ONE (CAS 2857-45-6), molecular formula C19H28O3 and molecular weight 304.42 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C19H28O3, 5-ANDROSTEN-3β, 19-DIOL-17-ONE contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 304.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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), 5-ANDROSTEN-3β, 19-DIOL-17-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 FormulaC19H28O3
Molecular Weight304.42 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-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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