Description

2-Ethynyl-1,4-Dimethylbenzene is a specialized aromatic acetylene derivative, serving as a versatile and valuable building block in advanced organic synthesis. Its core value lies in the highly reactive ethynyl group, which enables efficient carbon-carbon bond formation through reactions like Sonogashira coupling, making it essential for constructing complex molecular architectures. This compound is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and materials science industries for creating novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: A key synthon for constructing complex drug molecules, particularly those requiring arylacetylene motifs in oncology and CNS therapeutic areas.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators that incorporate tailored aromatic structures.
• Material Science & Polymer Chemistry: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers, conductive materials, and liquid crystals.
• Organic Ligand Precursor: Serves as a starting material for synthesizing sophisticated ligands used in catalysis and coordination chemistry.
• Chemical Research (R&D): Employed in academic and industrial research laboratories for methodology development and exploring new synthetic pathways.
• Fine Chemical Manufacturing: Integral to the multi-step synthesis of high-value, low-volume specialty chemicals and dyes.

Basic Information

Product Name	2-Ethynyl-1,4-Dimethylbenzene
CAS No.	74331-70-7
Molecular Formula	C10H10
Molecular Weight	130.19 g/mol
Synonyms	1,4-Dimethyl-2-ethynylbenzene; 2-Ethynyl-p-xylene; p-Xylene, 2-ethynyl-; 2-Ethynyl-1,4-dimethyl-benzene; 2-Ethynyl-p-xylene; 2-(Ethynyl)-1,4-dimethylbenzene
EINECS	Contact for details

Quality Control

Our 2-Ethynyl-1,4-Dimethylbenzene is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC/HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets the high standards required for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

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 materials such as strong oxidizing agents. For long-term storage, consider storing under an inert atmosphere (e.g., nitrogen or argon) to maintain optimal stability.

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.