Description

2(5H)-Furanone, 5-(1-Pentynyl)- (9Ci) is a specialized furanone derivative characterized by its alkyne-substituted lactone structure. This compound matters as a valuable synthetic intermediate and building block in advanced organic synthesis, offering a unique reactive handle for click chemistry and cycloaddition reactions. It is primarily needed by research and development chemists in the pharmaceutical, agrochemical, and material science industries for creating novel molecular architectures. The product is supplied under strict quality control, with the CAS number 79263-61-9.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly those requiring complex heterocyclic frameworks.
• Agrochemical Research: Used in the development of new pesticides, herbicides, and fungicides, leveraging its reactive alkyne group for structure-activity relationship (SAR) studies.
• Material Science & Polymer Chemistry: Acts as a monomer or cross-linking agent in the creation of specialty polymers and functional materials with tailored properties.
• Academic & Industrial R&D: A crucial reagent for methodological development in organic synthesis, including studies on ring-opening reactions and catalytic transformations.
• Click Chemistry Substrate: Its pentynyl side chain makes it an ideal substrate for copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, useful in bioconjugation and labeling.
• Flavor & Fragrance Synthon: Potential use as an intermediate for synthesizing complex lactone-based aroma compounds, though typically at high purity grades.

Basic Information

Product Name	2(5H)-Furanone, 5-(1-Pentynyl)- (9Ci)
CAS No.	79263-61-9
Molecular Formula	C9H10O2
Molecular Weight	150.17 g/mol
Synonyms	5-(1-Pentynyl)-2(5H)-furanone; 5-Pent-1-ynylfuran-2(5H)-one; 5-(Pent-1-yn-1-yl)furan-2(5H)-one; 2(5H)-Furanone, 5-(1-pentynyl)-; 79263-61-9; 5-(Pent-1-ynyl)-2(5H)-furanone; 5-(1-Pentynyl)-2(5H)-furanone
EINECS	Contact for details

Quality Control

Every batch of 2(5H)-Furanone, 5-(1-Pentynyl)- undergoes rigorous analytical testing to ensure identity, purity, and consistency. Our quality commitment aligns with cGMP principles for research-grade materials. A comprehensive Certificate of Analysis (COA) detailing results for assay, purity (by HPLC), and identification (by IR and NMR) is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) in a cool, dry, and well-ventilated place. Due to its sensitivity to light and oxidation, prolonged exposure to air or light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Research Grade)
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.