Description

Cyclobutanecarboxylic Acid CAS NO 3721-95-7 is a versatile four-membered ring carboxylic acid, serving as a critical building block in advanced organic synthesis. Its strained cyclobutane ring imparts unique reactivity, making it valuable for constructing complex molecular architectures. This intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active compounds and functional materials.

Application

• Pharmaceutical Intermediate: Key starting material or building block for the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a constrained, alicyclic framework.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the cyclobutane moiety can enhance biological activity and environmental profile.
• Ligand and Catalyst Development: Serves as a precursor for chiral ligands and organocatalysts used in asymmetric synthesis.
• Polymer & Material Science: Incorporated into specialty polymers, coatings, and advanced materials to modify physical properties like rigidity, thermal stability, or solubility.
• Fragrance & Flavor Chemistry: Utilized in the synthesis of specific aroma chemicals and flavoring agents.
• Academic & R&D: A valuable reagent for methodological development and exploring new chemical spaces in organic and medicinal chemistry research.

Basic Information

Product Name	Cyclobutanecarboxylic Acid
CAS No.	3721-95-7
Molecular Formula	C5H8O2
Molecular Weight	100.12 g/mol
Synonyms	Cyclobutanecarboxylic Acid; Cyclobutane-1-carboxylic Acid; Cyclobutanecarboxylic acid (8CI); NSC 106977; 1-Carboxycyclobutane; Cyclobutylcarboxylic Acid; Cyclobutylformic Acid; Cyclobutane carboxylic acid
EINECS	223-070-6

Quality Control

Our Cyclobutanecarboxylic Acid is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

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 15°C and 25°C. The product is a strong acid/organic solvent; handle with appropriate personal protective equipment.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
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.