Description

3-Ethynyl-4-Methyl-Benzoic Acid is a high-purity, synthetically valuable benzoic acid derivative featuring both an ethynyl and a methyl substituent. This compound serves as a versatile and critical organic building block for advanced chemical synthesis, enabling the construction of complex molecular architectures. It is primarily sought after by R&D and production teams in the pharmaceutical and agrochemical industries for developing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly for constructing complex aromatic and heterocyclic cores.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators requiring specific aromatic acid backbones.
• Material Science Research: Acts as a monomer or functionalizing agent in the synthesis of specialized polymers, dendrimers, and organic electronic materials.
• Ligand and Catalyst Development: Employed to create novel ligands for metal catalysis and organocatalysts due to its modifiable carboxylic acid and ethynyl groups.
• Chemical Biology Probes: Useful for synthesizing molecular probes and tags, leveraging the ethynyl group for bioorthogonal "click chemistry" reactions.
• Academic & Industrial R&D: A fundamental reagent for methodological studies in synthetic organic chemistry and process development.

Basic Information

Product Name	3-Ethynyl-4-Methyl-Benzoic Acid
CAS No.	1001203-03-7
Molecular Formula	C10H8O2
Molecular Weight	160.17 g/mol
Synonyms	4-Methyl-3-ethynylbenzoic acid; 3-Ethynyl-p-toluic acid; 3-Ethynyl-4-methylbenzoic acid; Benzoic acid, 3-ethynyl-4-methyl-; 1001203-03-7; 4-Methyl-3-(ethynyl)benzoic acid
EINECS	Contact for details

Quality Control

Our 3-Ethynyl-4-Methyl-Benzoic Acid is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, confirming compliance with agreed specifications. For customers with specific regulatory needs, we can support documentation for GMP or ISO-guided applications.

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 flame. For long-term storage, consider storing under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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