Description

3-Methylenepent-1-Yne (CAS NO 1574-34-1) is a highly reactive terminal alkyne and allene derivative, serving as a versatile building block in advanced organic synthesis. Its unique conjugated system of a methylene group and a terminal alkyne makes it a valuable precursor for constructing complex molecular architectures. This specialty chemical is primarily sought by R&D laboratories and production facilities in the pharmaceutical, agrochemical, and materials science sectors for developing novel compounds and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon for the synthesis of novel active pharmaceutical ingredients (APIs) and bioactive molecules, particularly those requiring complex alkyne or allene functionalities.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators that leverage its reactive sites for structural diversity.
• Material Science & Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polymers, resins, and advanced materials with tailored thermal or mechanical properties.
• Organic Synthesis & Catalysis: Employed in metal-catalyzed coupling reactions (e.g., Sonogashira, Click chemistry) and cycloaddition reactions to create complex heterocycles and conjugated systems.
• Ligand & Catalyst Development: Serves as a precursor for synthesizing novel ligands and organometallic catalysts used in asymmetric synthesis.
• Fine Chemical Production: Utilized in the multi-step synthesis of flavors, fragrances, dyes, and other high-value specialty chemicals.

Basic Information

Item	Detail
Product Name	3-Methylenepent-1-Yne
CAS No.	1574-34-1
Molecular Formula	C6H8
Molecular Weight	80.13 g/mol
Synonyms	1-Penten-4-yne, 3-methylene-; 3-Methylenepentyne; 3-Methylene-1-pentyne; Pent-1-yne, 3-methylene-; 3-Methylenepent-1-yne; 3-Methylene-1-penten-4-yne; 1-Pentyne, 3-methylene-
EINECS	Contact for details

Quality Control

Our production of 3-Methylenepent-1-Yne adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, GC-MS, and NMR to verify identity and quantify impurities. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile nature, store in a cool, well-ventilated place, preferably at 2-8°C or under conditions recommended on the specific material safety data sheet. Keep away from heat, sparks, open flames, and oxidizing agents.

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.