Description

3-Octynoic Acid is a versatile alkyne-containing carboxylic acid, serving as a critical building block in advanced organic synthesis. Its unique structure, featuring a terminal alkyne and a carboxylic acid group, makes it an invaluable intermediate for constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to develop new active ingredients, functional materials, and fine chemicals.

Application

• Pharmaceutical Intermediate: A key synthon for the preparation of active pharmaceutical ingredients (APIs), particularly in the synthesis of compounds with alkyne functionalities for click chemistry applications.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Material Science: Serves as a monomer or cross-linking agent in the production of specialty polymers, coatings, and adhesives with tailored properties.
• Organic Synthesis Building Block: Employed in Sonogashira coupling, Huisgen cycloaddition, and other catalytic reactions to introduce the octynoic acid moiety into target molecules.
• Liquid Crystal & Electronic Materials: A precursor in the synthesis of advanced organic materials for electronic and optoelectronic applications.
• Bioconjugation & Probe Development: Useful for labeling biomolecules (proteins, peptides) via its reactive alkyne group for diagnostic and research purposes.

Basic Information

Product Name	3-Octynoic Acid
CAS No.	57074-96-1
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	Oct-3-ynoic acid; 3-Octynoic acid; 3-Octyne-1-carboxylic acid; 1-Heptyne-1-carboxylic acid; 3-Octyn-1-oic acid; 3-Octynic acid; 3-Octynoic acid (6CI,7CI,8CI); 1-Carboxy-3-octyne
EINECS	Contact for details

Quality Control

Our 3-Octynoic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. The product is a strong acid/organic solvent; handle with appropriate personal protective equipment.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (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.