Description

Cyclopropanecarboxylic Acid, 1-(1-Methylene-2-Propenyl)-, Methyl Ester (9Ci) is a specialized organic ester featuring a cyclopropane ring and an unsaturated side chain. This unique molecular architecture makes it a valuable advanced intermediate for synthesizing complex molecules in fine chemical and pharmaceutical research. It is primarily sought by R&D chemists and process development scientists working in agrochemical discovery, pharmaceutical development, and material science, where it serves as a key building block for novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon for the research and development of novel drug candidates, particularly those requiring a functionalized cyclopropane core.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the cyclopropane moiety can contribute to biological activity.
• Fine Chemical Manufacturing: Serves as a versatile building block for creating complex fragrance compounds, flavors, and specialty polymers.
• Material Science Research: Investigated as a monomer or cross-linking agent for developing polymers with unique thermal or mechanical properties.
• Organic Synthesis Reagent: Employed in academic and industrial laboratories for methodology development and the construction of complex molecular architectures.

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 1-(1-Methylene-2-Propenyl)-, Methyl Ester (9Ci)
CAS No.	146857-47-8
Molecular Formula	C9H12O2
Molecular Weight	152.19 g/mol
Synonyms	1-(1-Methylene-2-propenyl)cyclopropanecarboxylic acid methyl ester; Methyl 1-(1-methyleneallyl)cyclopropanecarboxylate; 1-(1-Methyleneallyl)cyclopropanecarboxylic Acid Methyl Ester; 1-(1-Methylene-2-propen-1-yl)cyclopropanecarboxylic acid methyl ester; (1-Methyleneallyl)cyclopropanecarboxylic Acid Methyl Ester; Cyclopropanecarboxylic acid, 1-(1-methylene-2-propenyl)-, methyl ester; Methyl 1-(1-methylene-2-propenyl)cyclopropanecarboxylate
EINECS	Contact for details

Quality Control

Our Cyclopropanecarboxylic Acid, 1-(1-Methylene-2-Propenyl)-, Methyl Ester (9Ci) is produced under strict quality management protocols. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay (by GC/HPLC), identity (by IR/NMR), and impurity profiles are available upon request, supporting 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 2-25°C. Keep container tightly sealed when not in use to prevent moisture absorption and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Purity (GC Area %)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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