4-ESTREN-3α, 17β-DIOL CAS 35950-87-9

Purity 97%+In StockPharmaceutical Standards
CAS No.35950-87-9
Molecular FormulaC18H28O2
Molecular Weight276.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-ESTREN-3α, 17β-DIOL CAS 35950-87-9 chemical structure

Description

4-ESTREN-3α, 17β-DIOL (CAS 35950-87-9), molecular formula C18H28O2 and molecular weight 276.41 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4-ESTREN-3α, 17β-DIOL (C18H28O2) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC18H28O2
Molecular Weight276.41 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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1967

Related ESTREN Standards

Recommended Standards

Why CATO?