Description

1-Penten-4-Yne is a highly reactive, low molecular weight alkyne-alkene compound, serving as a versatile building block in advanced organic synthesis. Its unique conjugated system of a triple and a double bond makes it a valuable precursor for creating complex molecular architectures. This chemical is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty materials sectors for constructing novel compounds and intermediates.

Application

• Pharmaceutical Intermediate: A key starting material in the synthesis of active pharmaceutical ingredients (APIs) and complex heterocyclic compounds.
• Agrochemical Synthesis: Used in the production of novel herbicides, fungicides, and plant growth regulators requiring specific alkyne functionalities.
• Specialty Polymer Monomer: Acts as a co-monomer or cross-linking agent in the development of polymers with tailored thermal and mechanical properties.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, cycloadditions, and metal-catalyzed coupling reactions (e.g., Sonogashira) to create complex organic molecules.
• Material Science Research: Investigated for the development of conductive polymers, advanced coatings, and novel carbon-based materials.
• Flavor and Fragrance Intermediate: Used in the multi-step synthesis of specific aroma chemicals and flavoring agents.

Basic Information

Product Name	1-Penten-4-Yne
CAS No.	871-28-3
Molecular Formula	C5H6
Molecular Weight	66.10 g/mol
Synonyms	Penta-1,4-diene-3-yne; 1,4-Pentadien-3-yne; Allylacetylene; 3-Buten-1-yne; Vinylacetylene (Note: Vinylacetylene commonly refers to butenyne, but is a historical synonym for this structure); 4-Penten-1-yne (inverted numbering); UN 2453 (Proper Shipping Name may vary)
EINECS	212-816-7

Quality Control

Every batch of 1-Penten-4-Yne is produced and analyzed under strict quality management protocols to ensure consistency and purity for your critical applications. Our products undergo rigorous quality testing, including GC analysis for purity and identity confirmation, to ensure compliance with industry standards. A comprehensive Certificate of Analysis (COA) detailing batch-specific results is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated place away from heat, sparks, and open flames. Due to its highly volatile nature, containers must be kept tightly sealed and under an inert atmosphere (e.g., nitrogen) when not in use to prevent polymerization or decomposition. Recommended storage temperature is 2-8°C (refrigerated) for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.