Description

Methyl 2-Cyclobutylideneacetate CAS NO 143140-39-0 is a versatile and reactive ester building block featuring a strained cyclobutene ring system. This compound is valued for its unique structural motif, which enables its use in advanced organic synthesis and pharmaceutical research. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediates: A key synthon for the synthesis of novel active pharmaceutical ingredients (APIs), particularly those containing cyclobutane or cyclobutene rings.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides with unique modes of action.
• Material Science Precursors: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced materials.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, [2+2] cycloadditions, and other cyclization strategies to create complex, strained ring systems.
• Fragrance & Flavor Chemistry: Potential intermediate for creating novel aroma chemicals with specific olfactory profiles.
• Academic & Industrial R&D: A valuable tool for methodological studies and exploring new chemical spaces in catalysis and synthetic methodology.

Basic Information

Product Name	Methyl 2-Cyclobutylideneacetate
CAS No.	143140-39-0
Molecular Formula	C7H10O2
Molecular Weight	126.15 g/mol
Synonyms	2-Cyclobutylideneacetic acid methyl ester; Methyl (2-cyclobutylidene)acetate; Methyl cyclobutylideneacetate; Acetic acid, 2-cyclobutylidene-, methyl ester; Methyl 2-cyclobutylideneethanoate
EINECS	Contact for details

Quality Control

Our Methyl 2-Cyclobutylideneacetate is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing batch-specific results are available upon request to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 2°C and 8°C for long-term stability, although the product is typically stable at controlled room temperature for shorter periods. Keep container tightly sealed when not in use to prevent moisture absorption and potential degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 0.5%

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