5-n-Octylthiophene-2-boronic acid pinacol ester CAS 925424-90-4

Purity 97%+In StockPharmaceutical Standards
CAS No.925424-90-4
Molecular FormulaC18H31BO2S
Molecular Weight322.31 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-n-Octylthiophene-2-boronic acid pinacol ester CAS 925424-90-4 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.

5-n-Octylthiophene-2-boronic acid pinacol ester (CAS 925424-90-4), molecular formula C18H31BO2S and molecular weight 322.31 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 5-n-Octylthiophene-2-boronic acid pinacol ester (C18H31BO2S) is characterized by a sulfone group, a carboxylic acid group, 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 FormulaC18H31BO2S
Molecular Weight322.31 g/mol
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)3.5
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1987
Sulfur Atoms1

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