Description

4-Bromo-2-Ethylthiophene is a high-purity brominated heterocyclic building block essential for advanced organic synthesis. This compound is valued for its reactivity, particularly in cross-coupling reactions, enabling the construction of complex molecular architectures. It is a critical intermediate for researchers and manufacturers in the pharmaceutical, agrochemical, and materials science industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the development of novel active pharmaceutical ingredients (APIs), especially for candidates with thiophene-based scaffolds.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and fungicides.
• Material Science & Organic Electronics: Acts as a precursor for conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and semiconductors.
• Ligand & Catalyst Development: Employed in the synthesis of specialized ligands for metal-catalyzed reactions.
• Chemical Research: A versatile building block for academic and industrial R&D in synthetic organic chemistry, including Suzuki, Stille, and other palladium-catalyzed cross-couplings.
• Fine Chemical Production: Integral to the manufacture of complex dyes, pigments, and other specialty chemicals.

Basic Information

Product Name	4-Bromo-2-Ethylthiophene
CAS No.	83663-40-5
Molecular Formula	C6H7BrS
Molecular Weight	191.09 g/mol
Synonyms	2-Ethyl-4-bromothiophene; 4-Bromo-2-ethylthiophene; 2-Ethyl-4-bromothiophene; Thiophene, 4-bromo-2-ethyl-; 4-Bromo-2-ethyl-thiophene; 4-Bromo-2-ethylthiofuran; 83663-40-5 (CAS)
EINECS	Contact for details

Quality Control

Our 4-Bromo-2-Ethylthiophene is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from strong acids and incompatible materials. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Clear colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (Standard Grade)
Water Content (KF)	≤ 0.5%

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