Description

Benzoyl Chloride, 4-Ethynyl- (9Ci) is a specialized aromatic acid chloride derivative bearing a reactive ethynyl (acetylene) functional group, with the CAS registry number 62480-31-3. This unique bifunctional structure makes it a valuable high-purity building block for synthesizing complex molecules in advanced research and development. It is primarily sought after by pharmaceutical researchers and agrochemical developers for creating novel active compounds and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring a benzoyl moiety linked to an acetylene handle for further coupling reactions like Sonogashira or Click chemistry.
• Agrochemical Synthesis: Used in developing novel herbicides, fungicides, and pesticides where the ethynylbenzoyl scaffold can impart specific biological activity.
• Material Science & Polymer Chemistry: Serves as a monomer or cross-linking agent for creating specialized polymers, dendrimers, and advanced materials with tailored properties.
• Ligand and Catalyst Development: Employed in organic and organometallic chemistry to construct complex ligands for catalysis and molecular recognition.
• Life Sciences Research: Used as a biochemical probe or a labeling reagent in bioconjugation strategies due to its reactive acid chloride and alkyne groups.
• Fine Chemical Synthesis: A versatile intermediate for producing dyes, pigments, and other high-value specialty chemicals.

Basic Information

Product Name	Benzoyl Chloride, 4-Ethynyl- (9Ci)
CAS No.	62480-31-3
Molecular Formula	C9H5ClO
Molecular Weight	164.59 g/mol
Synonyms	4-Ethynylbenzoyl chloride; 4-Ethynylbenzoic acid chloride; p-Ethynylbenzoyl chloride; 4-Acetylene benzoyl chloride; (4-Ethynylphenyl)carbonyl chloride; 1-Chlorocarbonyl-4-ethynylbenzene; Benzoyl chloride, p-ethynyl-
EINECS	Contact for details

Quality Control

Our Benzoyl Chloride, 4-Ethynyl- is produced under stringent conditions to ensure batch-to-batch consistency and high purity suitable for research and development. Each lot undergoes rigorous analytical testing, including HPLC, GC, and NMR analysis, to verify identity, purity, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and reacts with strong acids/organic solvents; keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent hydrolysis. Keep away from heat, sparks, open flames, and incompatible materials such as bases, alcohols, and amines.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Purity (HPLC/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.