Description

2-Butynoic Acid, 4-Hydroxy-, Ethyl Ester is a specialized organic ester compound with a unique acetylenic backbone, serving as a valuable synthetic intermediate in advanced organic synthesis. Its bifunctional nature, featuring both an ester and a hydroxyl group on an unsaturated chain, makes it a versatile building block for constructing complex molecular architectures. This high-purity chemical is primarily sought by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and material science sectors for developing novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those requiring acetylenic or propargylic motifs for targeted biological activity.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and plant growth regulators that leverage its reactive alkyne functionality.
• Material Science Research: Acts as a monomer or cross-linking agent in the development of specialty polymers, coatings, and resins with tailored thermal or mechanical properties.
• Organic Synthesis Building Block: Employed in click chemistry (e.g., Huisgen cycloaddition) and other coupling reactions to introduce ester and hydroxyl functional groups into complex molecules.
• Liquid Crystal & Electronic Material Precursor: Investigated for the synthesis of organic components used in display technologies and organic semiconductors.
• Flavor & Fragrance Intermediate: Serves as a starting material for the synthesis of certain specialty aroma chemicals, though typically in research-scale quantities.

Basic Information

Product Name	2-Butynoic Acid, 4-Hydroxy-, Ethyl Ester
CAS No.	31555-04-1
Molecular Formula	C6H8O3
Molecular Weight	128.13 g/mol
Synonyms	Ethyl 4-Hydroxy-2-butynoate; 4-Hydroxy-2-butynoic Acid Ethyl Ester; Ethyl 4-Hydroxybut-2-ynoate; 2-Butynoic acid, 4-hydroxy-, ethyl ester; 4-Hydroxybut-2-ynoic Acid Ethyl Ester; Propargyl Alcohol, Ethyl Oxalate Derivative; 2-Butynoic Acid Ethyl Ester, 4-Hydroxy-
EINECS	Contact for details

Quality Control

Our 2-Butynoic Acid, 4-Hydroxy-, Ethyl Ester is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity suitable for research and synthesis. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. For customers with specific regulatory or application needs, we can discuss compliance with relevant standards or custom purity specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). Keep away from heat, sparks, open flames, and incompatible materials such as strong oxidizing agents, strong acids, and strong bases. Due to the potential sensitivity of the acetylenic and ester groups, prolonged exposure to elevated temperatures or moisture should be avoided.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.