Description

(3-Methylbenzo[B]Thiophen-2-Yl)Boronic Acid Pinacol Ester is a high-purity, synthetically valuable organoboron building block. This compound is essential for modern cross-coupling reactions, enabling the efficient construction of complex molecular architectures. It is primarily utilized by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials industries.

Application

• Pharmaceutical Intermediate: A key reagent in Suzuki-Miyaura cross-coupling reactions for synthesizing novel active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides requiring specific heterocyclic structures.
• Material Science Research: Serves as a precursor for creating organic electronic materials, such as those used in OLEDs and organic semiconductors.
• Chemical Biology: Employed in the synthesis of molecular probes and bioconjugates for studying biological processes.
• Catalyst & Ligand Development: Acts as a starting material for synthesizing novel ligands and catalysts used in asymmetric synthesis.
• Custom Synthesis & Contract Manufacturing: A critical building block for custom synthesis projects and scale-up processes in fine chemical production.

Basic Information

Item	Detail
Product Name	(3-Methylbenzo[B]Thiophen-2-Yl)Boronic Acid Pinacol Ester
CAS No.	1072811-91-6
Molecular Formula	C₁₅H₁₉BO₂S
Molecular Weight	274.19 g/mol
Synonyms	2-(3-Methylbenzo[b]thiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; (3-Methyl-1-benzothiophen-2-yl)boronic acid pinacol ester; 3-Methylbenzo[b]thiophene-2-boronic acid pinacol ester; 3-Methylbenzothiophene-2-boronic acid pinacol ester; 2-(3-Methylbenzo[b]thien-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; Pinacol (3-methylbenzo[b]thiophen-2-yl)boronate
EINECS	Contact for details

Quality Control

Our (3-Methylbenzo[B]Thiophen-2-Yl)Boronic Acid Pinacol Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC analysis, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) when opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥97.0% (Area %)
Water Content (KF)	≤0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.