Description

2-Butenedioicacid(2Z)-,Mono[(3-Ethyl-3-Oxetanyl)Methyl]Ester(9Ci) is a high-purity specialty chemical intermediate featuring a unique molecular structure that combines a maleate ester with an oxetane ring. This compound matters for its dual functionality, offering both a reactive ester group and a strained heterocyclic ring, making it a valuable building block for advanced polymer synthesis. It is primarily needed by R&D chemists and industrial manufacturers in the photoresist, advanced coatings, and specialty adhesive sectors seeking to develop materials with tailored properties.

Application

• Photoresist & Photopolymer Formulations: Acts as a key monomer or crosslinking agent in chemically amplified resists for semiconductor and microelectronics fabrication.
• UV-Curable Coatings & Inks: Serves as a reactive diluent or crosslinker to enhance cure speed, adhesion, and chemical resistance in high-performance coatings.
• Specialty Adhesives: Used to modify polymer backbones, improving thermal stability and bond strength in demanding industrial applications.
• Dental & Biomedical Materials: Incorporated as a co-monomer in the development of light-curable composites and biocompatible polymers.
• Advanced Polymer Research: A versatile synthon for creating novel polymers with specific functionalities via ring-opening and esterification reactions.
• Electronic Encapsulants: Contributes to the formulation of protective potting compounds and encapsulants with excellent dielectric properties.

Basic Information

Product Name	2-Butenedioicacid(2Z)-,Mono[(3-Ethyl-3-Oxetanyl)Methyl]Ester(9Ci)
CAS No.	819868-40-1
Molecular Formula	C10H14O5
Molecular Weight	214.22 g/mol
Synonyms	Mono(3-ethyl-3-oxetanylmethyl) maleate; (Z)-4-((3-Ethyloxetan-3-yl)methoxy)-4-oxobut-2-enoic acid; 3-Ethyl-3-oxetanemethanol maleate (1:1); Maleic acid mono[(3-ethyloxetan-3-yl)methyl] ester; Oxetane maleate ester; 819868-40-1; (3-Ethyloxetan-3-yl)methyl hydrogen maleate
EINECS	Contact for details

Quality Control

Our production of 2-Butenedioicacid(2Z)-,Mono[(3-Ethyl-3-Oxetanyl)Methyl]Ester adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided to guarantee traceability and compliance with your R&D or manufacturing requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from heat sources and incompatible materials such as strong bases and oxidizing agents. For long-term storage, consider using an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index	1.470 - 1.490
Specific Gravity	1.15 - 1.25

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