8α,13α,14β-Estra-4,9-diene-3,17-dione CAS 33383-90-3

Purity 97%+In StockPharmaceutical Standards
CAS No.33383-90-3
Molecular FormulaC18H22O2
Molecular Weight270.37 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

8α,13α,14β-Estra-4,9-diene-3,17-dione CAS 33383-90-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 270.37 g/mol gives 8α,13α,14β-Estra-4,9-diene-3,17-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

8α,13α,14β-Estra-4,9-diene-3,17-dione (CAS 33383-90-3) is a high-purity analytical reference standard with the molecular formula C18H22O2 and a molecular weight of 270.37 g/mol.

8α,13α,14β-Estra-4,9-diene-3,17-dione (C18H22O2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), 8α,13α,14β-Estra-4,9-diene-3,17-dione 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 FormulaC18H22O2
Molecular Weight270.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1966

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