Description

Cyclobutanecarboxylic Acid, 3-Methylene-, Ethyl Ester (9Ci) is a specialized organic ester building block characterized by its unique cyclobutane ring fused with a reactive methylene group. This compound matters as a versatile synthon for advanced organic synthesis, enabling the construction of complex molecular architectures found in pharmaceuticals and agrochemicals. It is primarily needed by R&D chemists and process development scientists in the fine chemical, pharmaceutical intermediate, and material science industries for developing novel active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, particularly those requiring strained ring systems for biological activity.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides where the cyclobutane moiety can enhance efficacy.
• Organic Synthesis Building Block: Acts as a versatile starting material for cycloaddition reactions, ring-opening polymerizations, and the preparation of complex natural product analogs.
• Material Science Research: Employed in the development of specialty polymers, resins, and advanced materials with tailored thermal or mechanical properties.
• Flavor & Fragrance Industry: Potential use in the synthesis of unique aroma chemicals and flavoring agents due to its distinct structural motif.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic chemistry and catalysis research.

Basic Information

Product Name	Cyclobutanecarboxylic Acid, 3-Methylene-, Ethyl Ester (9Ci)
CAS No.	40896-96-6
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	Ethyl 3-Methylenecyclobutanecarboxylate; 3-Methylenecyclobutanecarboxylic Acid Ethyl Ester; Ethyl 3-Methylenebutane-1-carboxylate; Cyclobutanecarboxylic acid, 3-methylene-, ethyl ester; 40896-96-6; Ethyl (3-methylenebutyl)carboxylate; 3-Methylene-cyclobutanecarboxylic acid ethyl ester
EINECS	Contact for details

Quality Control

Our Cyclobutanecarboxylic Acid, 3-Methylene-, Ethyl Ester (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC/HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the high standards required for research and development applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, open flames, and strong oxidizing agents. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0% (Standard Grade)
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.