Description

4-Pentynoic Acid, Methyl Ester is a versatile alkyne-containing building block used in advanced organic synthesis. This compound is valued for its terminal alkyne functionality, which enables efficient carbon-carbon bond formation through reactions like Sonogashira coupling and Huisgen cycloaddition. It serves as a critical intermediate for researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries developing novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Key synthon for constructing complex molecular scaffolds in drug discovery and development.
• Agrochemical Synthesis: Building block for creating novel herbicides, fungicides, and plant growth regulators.
• Material Science: Monomer or cross-linking agent in the synthesis of specialty polymers and advanced materials.
• Click Chemistry: Ideal substrate for copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions to create triazole linkages.
• Organic Synthesis: Used in Sonogashira coupling reactions to form conjugated systems and complex organic molecules.
• Chemical Research: A valuable reagent for academic and industrial R&D in synthetic methodology development.

Basic Information

Product Name	4-Pentynoic Acid, Methyl Ester
CAS No.	21565-82-2
Molecular Formula	C6H8O2
Molecular Weight	112.13 g/mol
Synonyms	Methyl 4-Pentynoate; Methyl Pent-4-ynoate; 4-Pentynoic Acid Methyl Ester; Pent-4-ynoic Acid Methyl Ester; Methyl 4-Pentynate; 4-Pentynoic Acid, Methyl Ester (CAS 21565-82-2); Methyl ester of 4-pentynoic acid
EINECS	Contact for details

Quality Control

Our 4-Pentynoic Acid, Methyl Ester is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical data, including chromatographic purity and identity confirmation. Certificates of Analysis (COA) are available for every batch upon request, detailing all relevant specifications and test results.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area. Recommended storage temperature is 2-8°C for long-term stability. Keep away from heat, sparks, and open flames. This material is moisture-sensitive (hygroscopic); ensure containers are sealed tightly after use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 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.