Description

2-Ethynylthiophene is a versatile heterocyclic building block featuring a reactive ethynyl group attached to a thiophene ring. This compound matters as a critical synthon in organic synthesis, enabling the construction of complex molecular architectures through cross-coupling and cycloaddition reactions. It is primarily needed by researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors for developing active ingredients, functional polymers, and organic electronic components.

Application

• Key intermediate in the synthesis of pharmaceutical candidates and active ingredients.
• Building block for agrochemicals, including herbicides and fungicides.
• Monomer or precursor for conductive polymers and organic semiconductors used in OLEDs and solar cells.
• Ligand precursor in catalysis and material science research.
• Starting material for the synthesis of complex heterocyclic compounds and natural product analogs.
• Used in academic and industrial R&D for method development and discovery chemistry.

Basic Information

Product Name	2-Ethynylthiophene
CAS No.	4298-52-6
Molecular Formula	C6H4S
Molecular Weight	108.16 g/mol
Synonyms	2-Ethynylthiophene; Thiophene-2-ethyne; 2-Thienylethyne; 2-(Ethynyl)thiophene; 2-Thienylacetylene; Ethynylthiophene
EINECS	Contact for details

Quality Control

Our 2-Ethynylthiophene is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. For long-term storage under inert atmosphere, please contact us for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/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.