Description

1-Cyclobutene-1-Carboxylicacid,3-Ethyl-,Methylester(9Ci) is a specialized organic ester building block of significant interest in advanced synthetic chemistry. Its unique cyclobutene core functionalized with an ethyl group and a carboxylic acid methyl ester makes it a valuable precursor for constructing complex molecular architectures. This compound is primarily sought by research and development chemists in the pharmaceutical and agrochemical sectors for applications in medicinal chemistry and material science. The CAS number for this product is 60697-56-5.

Application

This versatile chemical intermediate enables the synthesis of novel compounds across several high-value industries.

• Pharmaceutical Intermediate: Serves as a key building block in the research and development of new active pharmaceutical ingredients (APIs), particularly for creating strained ring systems.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its reactive ester and alkene functionalities.
• Material Science Research: Acts as a monomer or precursor for synthesizing specialized polymers and advanced organic materials with unique properties.
• Organic Synthesis & Catalysis: Employed in academic and industrial R&D for methodology development, including cycloaddition reactions and catalytic transformations.
• Flavor & Fragrance Chemistry: Potential use as an intermediate for synthesizing complex aroma chemicals due to its ester functional group and cyclic structure.

Basic Information

Product Name	1-Cyclobutene-1-Carboxylicacid,3-Ethyl-,Methylester(9Ci)
CAS No.	60697-56-5
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	Methyl 3-ethyl-1-cyclobutene-1-carboxylate; 3-Ethyl-1-cyclobutene-1-carboxylic acid methyl ester; 1-Cyclobutene-1-carboxylic acid, 3-ethyl-, methyl ester; Methyl 3-ethylcyclobut-1-ene-1-carboxylate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We provide comprehensive analytical data to support your R&D and scale-up processes. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request for every batch, ensuring full traceability and reliability for your critical synthesis work.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Recommended storage temperature is between 2°C and 8°C for long-term stability. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 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.