Description

1-Cyclobutene-1-Carboxylic Acid, 4-Methyl-, Methyl Ester (9Ci) is a specialized organic building block featuring a strained cyclobutene ring system. This compound is valued for its unique structural motif, which is of significant interest in advanced synthetic organic chemistry and materials science research. It serves as a critical intermediate for pharmaceutical development, agrochemical synthesis, and the creation of novel polymers and fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of complex drug molecules, particularly those requiring strained ring systems for biological activity.
• Agrochemical Synthesis: Used in the research and development of new active ingredients for crop protection products.
• Material Science Research: Serves as a monomer or building block for developing polymers with unique thermal or mechanical properties derived from the cyclobutene core.
• Organic Synthesis Reagent: Employed in academic and industrial R&D for cycloaddition reactions and the construction of complex carbon skeletons.
• Fine Chemical Production: Utilized in the manufacture of specialty chemicals, flavors, and fragrances where specific ring structures are required.

Basic Information

Product Name	1-Cyclobutene-1-Carboxylic Acid, 4-Methyl-, Methyl Ester (9Ci)
CAS No.	60697-55-4
Molecular Formula	C7H10O2
Molecular Weight	126.15 g/mol
Synonyms	Methyl 4-Methyl-1-cyclobutene-1-carboxylate; 4-Methyl-1-cyclobutene-1-carboxylic Acid Methyl Ester; 1-Cyclobutene-1-carboxylic acid, 4-methyl-, methyl ester; Methyl 4-methylcyclobut-1-ene-1-carboxylate
EINECS	Contact for details

Quality Control

Our production of 1-Cyclobutene-1-Carboxylic Acid, 4-Methyl-, Methyl Ester (9Ci) adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography and spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all critical parameters are provided with every shipment to guarantee traceability and compliance with your research or production specifications.

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 incompatible materials such as strong bases 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.