Description

4-Ethylthiophen-2-Ylboronic Acid is a high-purity organoboron reagent, specifically a thiophene-substituted boronic acid derivative. This compound is a critical building block in modern synthetic chemistry, enabling the formation of carbon-carbon bonds via the versatile Suzuki-Miyaura cross-coupling reaction. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors who require precise and reliable intermediates for constructing complex heterocyclic molecules.

Application

• Pharmaceutical Intermediate: A key synthon for the synthesis of active pharmaceutical ingredients (APIs) and drug candidates containing functionalized thiophene cores.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides that incorporate heterocyclic structures.
• Material Science: Serves as a precursor in the creation of organic electronic materials, such as conductive polymers, OLEDs, and organic semiconductors.
• Chemical Research: Employed in academic and industrial R&D for palladium-catalyzed cross-coupling reactions to create novel chemical libraries.
• Ligand & Catalyst Development: Utilized in the preparation of specialized ligands and organometallic catalysts for asymmetric synthesis.
• Fine Chemical Production: Integral for the custom synthesis of complex, high-value specialty chemicals for various industrial applications.

Basic Information

Item	Detail
Product Name	4-Ethylthiophen-2-Ylboronic Acid
CAS No.	1142946-75-5
Molecular Formula	C6H9BO2S
Molecular Weight	156.01 g/mol
Synonyms	2-(4-Ethylthiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; (4-Ethylthiophen-2-yl)boronic acid; 4-Ethyl-2-thienylboronic Acid; 4-Ethylthiophene-2-boronic Acid; 2-Borono-4-ethylthiophene; 4-Ethyl-2-thiopheneboronic Acid; PINACOL (4-ETHYL-2-THIENYL)BORONATE
EINECS	Contact for details

Quality Control

Every batch of 4-Ethylthiophen-2-Ylboronic Acid is manufactured and tested under strict quality management protocols. We ensure high purity and consistency through advanced analytical techniques including NMR, HPLC, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee compliance with your research and production specifications.

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 (argon or nitrogen) for long-term storage to prevent decomposition.

Specification

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

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