Description

Thiophene, 3-Ethynyl-2,5-Dimethyl- (9Ci) is a specialized heterocyclic building block featuring a thiophene core functionalized with an ethynyl group and methyl substituents. This compound matters as a versatile and high-value synthetic intermediate, enabling the construction of complex molecular architectures for advanced materials and pharmaceuticals. It is primarily needed by R&D chemists and process development scientists in the agrochemical, pharmaceutical, and organic electronics industries for applications in drug discovery and functional material synthesis.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for targeted therapies.
• Agrochemical Research: Used in developing new generation crop protection agents and herbicides with enhanced efficacy.
• Organic Electronic Materials: Acts as a building block for π-conjugated systems in organic semiconductors, OLEDs, and photovoltaic materials.
• Ligand Synthesis: Employed in the preparation of specialized ligands for catalysis and metal-organic frameworks (MOFs).
• Polymer Chemistry: Utilized as a monomer or cross-linking agent for creating polymers with specific electronic or thermal properties.
• Chemical Biology Probes: Incorporated into molecular probes and tags for imaging and diagnostic applications due to its reactive alkyne handle.

Basic Information

Product Name	Thiophene, 3-Ethynyl-2,5-Dimethyl- (9Ci)
CAS No.	127798-29-2
Molecular Formula	C8H8S
Molecular Weight	136.21 g/mol
Synonyms	3-Ethynyl-2,5-dimethylthiophene; 2,5-Dimethyl-3-ethynylthiophene; 3-Ethynyl-2,5-dimethylthiophene (9CI); 3-Ethynyl-2,5-dimethyl-thiophene; Thiophene, 3-ethynyl-2,5-dimethyl-; 2,5-Dimethylthiophene-3-ethyne
EINECS	Contact for details

Quality Control

Our Thiophene, 3-Ethynyl-2,5-Dimethyl- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency suitable for research and scale-up. Certificates of Analysis (COA) with detailed specifications are provided and available upon request.

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 heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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