Description

5-Methoxythiophene-2-Boronic Acid is a high-value organoboronic acid derivative, serving as a critical building block in modern synthetic chemistry. Its primary importance lies in its role as a versatile coupling partner in Suzuki-Miyaura cross-coupling reactions, enabling the efficient construction of complex biaryl and heterobiaryl structures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors, particularly in the development of novel active ingredients and functional organic molecules.

Application

• Pharmaceutical Intermediate: Key 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 requiring specific heterocyclic architectures.
• Material Science: Building block for creating organic electronic materials, such as conductive polymers, OLED (Organic Light-Emitting Diode) components, and organic semiconductors.
• Chemical Research & Development: A versatile reagent in academic and industrial R&D labs for exploring new synthetic pathways and creating complex molecular libraries.
• Ligand and Catalyst Development: Serves as a precursor for synthesizing specialized ligands used in homogeneous catalysis.
• Fine Chemical Production: Employed in the custom synthesis of specialty and performance chemicals for various high-tech applications.

Basic Information

Product Name	5-Methoxythiophene-2-Boronic Acid
CAS No.	162607-21-8
Molecular Formula	C5H7BO3S
Molecular Weight	157.98 g/mol
Synonyms	(5-Methoxy-2-thienyl)boronic acid; 5-Methoxy-2-thiopheneboronic acid; 2-Borono-5-methoxythiophene; 5-Methoxythiophene-2-boronic acid pinacol ester (common derivative); 5-Methoxy-2-thienyl-B(OH)2; 5-Methoxy-thiophene-2-ylboronic acid
EINECS	Contact for details

Quality Control

Our 5-Methoxythiophene-2-Boronic Acid is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity, suitable for demanding applications like pharmaceutical R&D. Each lot undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

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 material 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.