Description

2-Ethylthiophenylboronic Acid is a versatile organoboron compound widely used as a key building block in modern synthetic chemistry. Its primary value lies in its crucial role as a coupling partner in Suzuki-Miyaura cross-coupling reactions, enabling the efficient construction of complex biaryl structures. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors, particularly in the development of novel active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, especially those containing thiophene and biaryl motifs.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides that require specific aryl-aryl linkages.
• Material Science: Serves as a building block for creating organic electronic materials, such as those used in OLEDs, semiconductors, and conductive polymers.
• Chemical Research & Development: A fundamental reagent in academic and industrial R&D labs for exploring new catalytic processes and constructing complex molecular libraries.
• Ligand Synthesis: Employed in the preparation of specialized ligands for catalysis and metal-organic frameworks (MOFs).
• Fine Chemical Production: Integral to the custom synthesis of specialty chemicals and high-value intermediates for various industrial applications.

Basic Information

Product Name	2-Ethylthiophenylboronic Acid
CAS No.	362045-33-8
Molecular Formula	C8H11BO2S
Molecular Weight	182.05 g/mol
Synonyms	(2-Ethylthiophen-5-yl)boronic Acid; 5-Borono-2-ethylthiophene; 2-Ethyl-5-thiopheneboronic Acid; 2-Ethylthien-5-ylboronic Acid; 2-Ethyl-5-thienylboronic Acid; Boronic acid, B-(2-ethyl-5-thienyl)-; 2-Ethyl-5-thiophenylboronic Acid
EINECS	Contact for details

Quality Control

Every batch of our 2-Ethylthiophenylboronic Acid is produced and tested under a strict quality management system to ensure consistency and reliability for your critical applications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as purity, identity, and impurity profiles. Our commitment to quality supports compliance with cGMP and ISO standards where required, ensuring the material is suitable for use in regulated environments like pharmaceutical development.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥97.0%
Water Content (KF)	≤1.0%

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