(3α,5β,17α)-13-Ethyl-18,19-dinorpregnane-3,17-diol CAS 87304-65-2

Purity 97%+In StockPharmaceutical Standards
CAS No.87304-65-2
Molecular FormulaC21H36O2
Molecular Weight320.51 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3α,5β,17α)-13-Ethyl-18,19-dinorpregnane-3,17-diol CAS 87304-65-2 chemical structure

Description

Based on its molecular formula C21H36O2, (3α,5β,17α)-13-Ethyl-18,19-dinorpregnane-3,17-diol 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 320.51 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).

CATO supplies (3α,5β,17α)-13-Ethyl-18,19-dinorpregnane-3,17-diol (CAS 87304-65-2), a certified reference material (molecular formula C21H36O2, MW 320.51 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.

As a certified reference material (CRM), (3α,5β,17α)-13-Ethyl-18,19-dinorpregnane-3,17-diol 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 FormulaC21H36O2
Molecular Weight320.51 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1981

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