Description

3-Chloro-4-Ethynylbenzoic Acid is a high-purity, multi-functional organic building block characterized by its benzoic acid core, chloro substituent, and terminal alkyne group. This unique molecular architecture makes it a critical intermediate for synthesizing complex molecules in advanced research and development. It is primarily sought after by pharmaceutical, agrochemical, and material science industries for constructing novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the development of new drug candidates, particularly for creating targeted small molecules.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and plant growth regulators.
• Material Science Precursor: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers, resins, and advanced organic frameworks (MOFs/COFs).
• Ligand and Catalyst Development: The ethynyl group is utilized in click chemistry (e.g., CuAAC reactions) to create complex ligands for catalysis.
• Chemical Biology Probe Synthesis: Employed in creating molecular probes and tags for studying biological processes.
• Organic Electronic Materials: A building block for π-conjugated systems used in organic semiconductors and optoelectronic devices.

Basic Information

Product Name	3-Chloro-4-Ethynylbenzoic Acid
CAS No.	1866562-06-2
Molecular Formula	C9H5ClO2
Molecular Weight	180.59 g/mol
Synonyms	4-Ethynyl-3-chlorobenzoic Acid; 3-Chloro-4-ethynylbenzoic Acid; Benzoic acid, 3-chloro-4-ethynyl-; 1866562-06-2; 3-Chloro-4-ethynyl-benzoic acid
EINECS	Contact for details

Quality Control

Our 3-Chloro-4-Ethynylbenzoic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and FTIR, to ensure high chemical purity and structural integrity. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee batch-to-batch consistency for your critical R&D and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The compound is light-sensitive; prolonged exposure to light should be avoided.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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