Description

Cyclobutanecarboxylic Acid, 1-Methyl-3-Oxo-, Ethyl Ester (9Ci) is a high-purity, specialized organic ester building block with the CAS number 227607-44-5. This compound is valued for its unique cyclobutane ring structure and functional groups, making it a critical intermediate in advanced synthetic chemistry. It is primarily sought after by research and development teams in the pharmaceutical and agrochemical sectors for the synthesis of novel active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: A key building block in the research and synthesis of novel drug candidates, particularly those requiring a constrained cyclobutane scaffold.
• Agrochemical Synthesis: Used in the development of new pesticides and herbicides, where its structure can contribute to unique biological activity.
• Organic Synthesis & Research: Serves as a versatile precursor for cyclobutane-containing compounds in academic and industrial R&D laboratories.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, flavors, and fragrances requiring specific stereochemistry.
• Material Science Research: Investigated as a monomer or precursor for polymers with tailored thermal and mechanical properties.

Basic Information

Product Name	Cyclobutanecarboxylic Acid, 1-Methyl-3-Oxo-, Ethyl Ester (9Ci)
CAS No.	227607-44-5
Molecular Formula	C8H12O3
Molecular Weight	156.18 g/mol
Synonyms	Ethyl 1-Methyl-3-oxocyclobutanecarboxylate; 1-Methyl-3-oxocyclobutanecarboxylic Acid Ethyl Ester; 3-Oxo-1-methylcyclobutanecarboxylic Acid Ethyl Ester; Ethyl 3-Oxo-1-methylcyclobutanecarboxylate; Cyclobutanecarboxylic acid, 1-methyl-3-oxo-, ethyl ester; 227607-44-5; 1-Methyl-3-oxocyclobutane-1-carboxylic acid ethyl ester
EINECS	Contact for details

Quality Control

Our Cyclobutanecarboxylic Acid, 1-Methyl-3-Oxo-, Ethyl Ester (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and identity confirmation. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and compliance with your research or production standards.

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 organic solvents. Recommended long-term storage temperature is 2-8°C. Allow the container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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