rel-(4R,5R)-2,5-dimethyl-3,4-diphenylcyclopent-2-en-1-one CAS 4970-79-0

Purity 97%+In StockPharmaceutical Standards
CAS No.4970-79-0
Molecular FormulaC19H18O
Molecular Weight262.35 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

rel-(4R,5R)-2,5-dimethyl-3,4-diphenylcyclopent-2-en-1-one CAS 4970-79-0 chemical structure

Description

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.

rel-(4R,5R)-2,5-dimethyl-3,4-diphenylcyclopent-2-en-1-one (CAS 4970-79-0), molecular formula C19H18O and molecular weight 262.35 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of rel-(4R,5R)-2,5-dimethyl-3,4-diphenylcyclopent-2-en-1-one (C19H18O) 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 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).

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 FormulaC19H18O
Molecular Weight262.35 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958

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Why CATO?