Description

1-Cyclobutene-1-Carboxylicacid,2-Methyl-,Ethylester(9Ci) is a specialized organic ester building block of significant interest in advanced synthetic chemistry. Its unique cyclobutene core functionalized with a carboxylic ester group 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.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of novel active pharmaceutical ingredients (APIs), particularly for constructing strained ring systems.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and insecticides, leveraging its reactive ester functionality.
• Material Science Research: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers with unique thermal or mechanical properties.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for cycloaddition reactions, ring-opening polymerizations, and the synthesis of complex natural product analogs.
• Fine Chemical Production: Utilized in the multi-step synthesis of flavors, fragrances, and other high-value specialty chemicals.

Basic Information

Product Name	1-Cyclobutene-1-Carboxylicacid,2-Methyl-,Ethylester(9Ci)
CAS No.	146857-41-2
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	Ethyl 2-Methyl-1-cyclobutene-1-carboxylate; 2-Methyl-1-cyclobutene-1-carboxylic Acid Ethyl Ester; 1-Cyclobutene-1-carboxylic acid, 2-methyl-, ethyl ester; Ethyl 2-methylcyclobut-1-ene-1-carboxylate
EINECS	Contact for details

Quality Control

Our production of 1-Cyclobutene-1-Carboxylicacid,2-Methyl-,Ethylester(9Ci) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing purity, identity, 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. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flames. For long-term storage, consider maintaining under an inert atmosphere to preserve stability.

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.