Description

Thiophene, 2-Ethyl-5-Ethynyl- is a high-purity, functionalized thiophene derivative of significant interest in advanced organic synthesis. This compound serves as a versatile and critical building block for the development of novel materials and active pharmaceutical ingredients (APIs). It is primarily sought after by researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries, where its unique molecular structure enables the construction of complex heterocyclic systems and conjugated frameworks.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new-generation pesticides and herbicides, leveraging the thiophene moiety for biological activity.
• Organic Electronic Materials: Serves as a fundamental monomer or co-monomer for constructing conjugated polymers and small molecules used in Organic Light-Emitting Diodes (OLEDs), Organic Photovoltaics (OPVs), and field-effect transistors (OFETs).
• Ligand and Catalyst Development: The ethynyl group provides a handle for click chemistry and other coupling reactions, useful for creating sophisticated ligands for catalysis.
• Chemical Research & Development: Employed as a specialized reagent in academic and industrial R&D labs for exploring new synthetic methodologies and heterocyclic chemistry.

Basic Information

Product Name	Thiophene, 2-Ethyl-5-Ethynyl-
CAS No.	1057670-00-4
Molecular Formula	C8H8S
Molecular Weight	136.21 g/mol
Synonyms	2-Ethyl-5-ethynylthiophene; 5-Ethynyl-2-ethylthiophene; 2-Ethylthiophene-5-carbaldehyde, ethynyl derivative; Thiophene, 2-ethyl-5-ethynyl-; 2-Ethyl-5-ethynyl-thiophene; 5-Ethynyl-2-ethyl-thiophene; (5-Ethyl-2-thienyl)acetylene
EINECS	Contact for details

Quality Control

Our Thiophene, 2-Ethyl-5-Ethynyl- is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with customer specifications and supporting regulatory requirements for research and production.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) in a cool, dry, and well-ventilated place. Keep away from heat, sparks, and open flame. Due to its sensitivity, minimize exposure to air and moisture during handling.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
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.