Description

3-Ethynylthiophene is a high-purity, functionalized heterocyclic building block of significant importance in advanced organic synthesis. Its unique structure, featuring both a thiophene ring and a terminal alkyne group, makes it a versatile precursor for constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the fields of pharmaceutical development, materials science, and agrochemical research, where it is used to create novel polymers, electronic materials, and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediates: A key synthon for the synthesis of novel drug candidates, particularly in kinase inhibitor and antiviral research.
• Conjugated Polymer Synthesis: Serves as a crucial monomer for creating conductive and semiconductive polymers used in organic electronics.
• Organic Light-Emitting Diodes (OLEDs): Used in the development of advanced emissive and charge-transport materials for display and lighting technologies.
• Agrochemical Research: Employed as a building block for novel active ingredients with specific biological activity.
• Material Science & Surface Chemistry: Acts as a precursor for functionalized surfaces, sensors, and advanced coatings via click chemistry.
• Academic & Industrial R&D: A valuable reagent for exploring new synthetic methodologies and heterocyclic chemistry.

Basic Information

Product Name	3-Ethynylthiophene
CAS No.	67237-53-0
Molecular Formula	C6H4S
Molecular Weight	108.16 g/mol
Synonyms	3-Ethynylthiophene; Thiophene-3-ethyne; 3-Thienylethyne; 3-Ethynyl-thiophene; 3-(Ethynyl)thiophene; 1-Thiophen-3-ylethyne; 3-Thienylacetylene
EINECS	Contact for details

Quality Control

Our 3-Ethynylthiophene is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC, GC, and NMR analysis, to verify identity, purity, and impurity profiles. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications. We support cGMP and ISO 9001 standards for research and development applications.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
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.