Description

4-Ethyl-3-Ethynylbenzoic Acid is a high-purity, multi-functional benzoic acid derivative characterized by its unique ethyl and ethynyl substituents. This compound serves as a versatile and valuable advanced pharmaceutical intermediate and organic synthesis building block, enabling the construction of complex molecular architectures. It is primarily utilized by R&D and production teams in the pharmaceutical, agrochemical, and specialty chemical industries for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel small-molecule drug candidates, particularly in oncology and CNS therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new-generation herbicides, fungicides, and plant growth regulators.
• Ligand & Catalyst Development: Serves as a precursor for creating specialized ligands in transition metal catalysis and organometallic chemistry.
• Material Science: A monomer or cross-linking agent in the development of advanced polymers with specific optical or electronic properties.
• Chemical Research: A versatile reagent for academic and industrial research in organic synthesis and methodology development.
• Fine Chemical Production: Intermediate in the multi-step synthesis of dyes, pigments, and other high-value specialty chemicals.

Basic Information

Product Name	4-Ethyl-3-Ethynylbenzoic Acid
CAS No.	2101206-43-1
Molecular Formula	C11H10O2
Molecular Weight	174.20 g/mol
Synonyms	3-Ethynyl-4-ethylbenzoic Acid; Benzoic acid, 4-ethyl-3-ethynyl-; 4-Ethyl-3-ethynyl-benzoic acid; 2101206-43-1; 4-Ethyl-3-ethynylbenzoic acid (CAS 2101206-43-1)
EINECS	Contact for details

Quality Control

Every batch of 4-Ethyl-3-Ethynylbenzoic Acid is manufactured under a strict quality management system. Our products undergo rigorous quality testing, including advanced chromatographic and spectroscopic methods, to ensure compliance with industry standards and customer-specific requirements. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory documentation.

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 material is light-sensitive and easily oxidized; for long-term storage, consider keeping under an inert atmosphere such as nitrogen or argon to maintain optimal purity and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.