Description

4-Pentynoic Acid, Phenylmethyl Ester is a versatile alkyne-containing ester building block of significant interest in advanced organic synthesis. Its molecular structure, featuring both an ester and a terminal alkyne functional group, makes it a valuable precursor for click chemistry and other coupling reactions. This compound is primarily utilized by research chemists and process development scientists in the pharmaceutical and agrochemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for Huisgen cycloaddition (click chemistry) to create triazole linkages.
• Agrochemical Synthesis: Used in the preparation of novel crop protection agents and herbicides, leveraging its alkyne moiety for structural diversification.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and functional materials with tailored properties.
• Chemical Biology Probes: Employed in the synthesis of bioconjugates and molecular probes for studying biological processes via bioorthogonal chemistry.
• Ligand and Catalyst Development: Acts as a precursor for synthesizing specialized ligands and organometallic catalysts used in asymmetric synthesis.
• Academic & Industrial R&D: A fundamental research chemical for methodology development in organic chemistry and exploring new reaction pathways.

Basic Information

Product Name	4-Pentynoic Acid, Phenylmethyl Ester
CAS No.	126378-11-8
Molecular Formula	C12H12O2
Molecular Weight	188.22 g/mol
Synonyms	Benzyl 4-pentynoate; Benzyl pent-4-ynoate; 4-Pentynoic acid benzyl ester; Pent-4-ynoic acid phenylmethyl ester; Benzyl ester of 4-pentynoic acid; 4-Pentynoic Acid Benzyl Ester; Phenylmethyl 4-pentynoate
EINECS	Contact for details

Quality Control

Our 4-Pentynoic Acid, Phenylmethyl Ester is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity for research and development applications. We provide comprehensive analytical data, including HPLC purity, identity confirmation (IR, NMR), and impurity profiling. A Certificate of Analysis (COA) detailing all specifications is available for every batch upon request.

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 stability.

Specification

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