Description

3-Ethynyl-3-Methyloxetane is a highly versatile and reactive oxetane derivative, serving as a critical building block in advanced polymer and materials science. Its value lies in the unique combination of a strained oxetane ring and a terminal alkyne group, enabling efficient click chemistry and ring-opening polymerization for creating high-performance materials. This compound is essential for R&D chemists and manufacturers in the pharmaceutical, specialty polymer, and advanced adhesive industries, where it is used to develop novel drug delivery systems, photoresists, and high-strength, cross-linked networks.

Application

• Photopolymer & Photoresist Formulation: Acts as a key monomer for cationic ring-opening polymerization under UV light, enabling the production of high-resolution coatings and electronic materials.
• Click Chemistry Reagent: The terminal alkyne group facilitates Huisgen cycloaddition (copper-catalyzed azide-alkyne cycloaddition) for bioconjugation and polymer functionalization.
• Pharmaceutical Intermediates: Used in the synthesis of complex molecules and prodrugs, leveraging its reactive handles for targeted drug delivery system development.
• Cross-linking Agent for Polymers: Enhances thermal stability, mechanical strength, and chemical resistance in epoxy, polyurethane, and other specialty resin systems.
• Adhesive & Sealant Formulation: Imparts improved adhesion and durability to high-performance industrial adhesives.
• Surface Modification: Used to create functionalized surfaces with specific chemical properties for biomedical devices or composite materials.
• Academic & Industrial R&D: A valuable tool for exploring new polymerization mechanisms and material properties in research laboratories.

Basic Information

Product Name	3-Ethynyl-3-Methyloxetane
CAS No.	1290541-27-3
Molecular Formula	C6H8O
Molecular Weight	96.13 g/mol
Synonyms	3-Methyl-3-ethynyloxetane; 3-Ethynyl-3-methyl-oxetane; Oxetane, 3-ethynyl-3-methyl-; 3-Ethynyl-3-methyloxacyclobutane; 3-Methyl-3-oxetanylethyne; EMO (abbreviation); 3-Methyl-3-(ethynyl)oxetane
EINECS	Contact for details

Quality Control

Our 3-Ethynyl-3-Methyloxetane is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to maintain stability and minimize volatility. Keep away from heat, sparks, open flames, and oxidizing agents. Due to its highly volatile nature, ensure containers are properly sealed when not in use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.4400 - 1.4450
Density (20°C)	0.95 - 0.99 g/mL

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