Description

Cyclopropanesulfonic Acid is a versatile organosulfur compound featuring a strained cyclopropane ring directly attached to a sulfonic acid group. This unique structure makes it a valuable building block and reagent in advanced organic synthesis, particularly for introducing the cyclopropanesulfonyl moiety. It is primarily utilized by pharmaceutical, agrochemical, and specialty chemical research and development teams for creating novel molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new active pharmaceutical ingredients (APIs), especially in medicinal chemistry programs targeting sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides where the cyclopropane ring confers specific biological activity.
• Ligand and Catalyst Preparation: Serves as a precursor for sulfonate ligands in coordination chemistry and catalysis.
• Polymer Modification: Employed to introduce sulfonic acid functional groups into polymers, potentially altering solubility or ionic properties.
• Organic Synthesis Reagent: Acts as a strong acid catalyst or a source of the cyclopropanesulfonyl group in various organic transformations, such as esterifications and ring-opening reactions.
• Chemical Research: Used in academic and industrial R&D for exploring new reactions and synthesizing complex, strained-ring molecules.

Basic Information

Product Name	Cyclopropanesulfonic Acid
CAS No.	21297-68-7
Molecular Formula	C3H6O3S
Molecular Weight	122.14 g/mol
Synonyms	Cyclopropanesulphonic Acid; Cyclopropane-1-sulfonic Acid; Cyclopropylsulfonic Acid; 1-Cyclopropanesulfonic Acid; Cyclopropane Sulfonic Acid; Cyclopropanesulfonate; Cyclopropanesulfonic Acid (CAS 21297-68-7)
EINECS	Contact for details

Quality Control

Our Cyclopropanesulfonic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment.

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. Due to its nature as a strong acid/organic solvent, appropriate secondary containment is recommended. Recommended long-term storage temperature: 2-8°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%

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