Description

3-Ethynyltoluene is a versatile aromatic alkyne building block, valued for its terminal ethynyl group which enables efficient cross-coupling and cycloaddition reactions. This compound is essential for the synthesis of complex organic molecules, particularly in advanced material science and pharmaceutical research. It serves as a critical intermediate for researchers and manufacturers in the fields of specialty polymers, liquid crystals, and agrochemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates.
• Material Science: Monomer for the production of specialty polymers, conductive materials, and advanced resins.
• Agrochemical Synthesis: Intermediate in the development of novel pesticides and herbicides.
• Liquid Crystal & OLED Materials: Core component in the manufacture of electronic display materials and organic light-emitting diodes.
• Organic Synthesis & Research: Versatile reagent for Sonogashira coupling, click chemistry, and other catalytic transformations in R&D laboratories.
• Coordination Chemistry: Ligand precursor for the development of metal-organic frameworks (MOFs) and catalysts.

Basic Information

Product Name	3-Ethynyltoluene
CAS No.	766-82-5
Molecular Formula	C9H8
Molecular Weight	116.16 g/mol
Synonyms	3-Methylphenylacetylene; m-Tolylacetylene; 1-Ethynyl-3-methylbenzene; 3-Methyl-1-ethynylbenzene; m-Methylphenylacetylene; 3-Tolylacetylene; (3-Methylphenyl)ethyne
EINECS	212-165-2

Quality Control

Our 3-Ethynyltoluene is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including GC, NMR, and FTIR, to verify identity and purity. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flame. Due to its highly volatile nature, containers must be kept tightly sealed when not in use. Recommended storage temperature is 2-8°C for long-term stability.

Specification

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