5-Carboxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene 5-Carboxy-2-thienylboronic acid pinacol ester 5-Carboxythiophene-2-boronic acid pinacol ester 779335-05-6 CAS 779335-05-6

Purity 97%+In StockPharmaceutical Standards
CAS No.779335-05-6
Molecular FormulaC11H19BO4S
Molecular Weight258.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Carboxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene 5-Carboxy-2-thienylboronic acid pinacol ester 5-Carboxythiophene-2-boronic acid pinacol ester 779335-05-6 CAS 779335-05-6 chemical structure

Description

As a certified reference material (CRM), 5-Carboxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene 5-Carboxy-2-thienylboronic acid pinacol ester 5-Carboxythiophene-2-boronic acid pinacol ester 779335-05-6 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.

5-Carboxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene 5-Carboxy-2-thienylboronic acid pinacol ester 5-Carboxythiophene-2-boronic acid pinacol ester 779335-05-6 (CAS 779335-05-6) is a high-purity analytical reference standard with the molecular formula C11H19BO4S and a molecular weight of 258.14 g/mol.

The molecular framework of 5-Carboxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene 5-Carboxy-2-thienylboronic acid pinacol ester 5-Carboxythiophene-2-boronic acid pinacol ester 779335-05-6 (C11H19BO4S) 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

Physical & Chemical Properties

Molecular FormulaC11H19BO4S
Molecular Weight258.14 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.5
CAS Registry Year (est.)1986
Sulfur Atoms1

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