Description

Cyclopropanecarboxylic Acid, 1,2-Dimethyl-, Ethyl Ester (9Ci) is a specialized cyclopropane derivative ester, valued for its unique three-membered ring structure which imparts significant steric and electronic properties. This compound serves as a critical advanced pharmaceutical intermediate and a versatile building block in organic synthesis, enabling the construction of complex molecular architectures. It is primarily sought by R&D and production teams in the pharmaceutical, agrochemical, and fine chemical sectors for developing novel active ingredients.

Application

This high-purity ester is engineered for precision applications where structural complexity and purity are paramount.

• Pharmaceutical Intermediate: Key synthon for the development of proprietary drug candidates, particularly those targeting central nervous system (CNS) and metabolic diseases.
• Agrochemical Synthesis: Building block for novel pesticides and herbicides, leveraging the biological activity of the cyclopropane moiety.
• Ligand and Catalyst Development: Used in organometallic chemistry to create chiral ligands for asymmetric synthesis.
• Fine Chemical & Flavor/Fragrance Precursor: Intermediate for synthesizing complex esters and lactones used in specialty chemical formulations.
• Material Science Research: Monomer or additive in polymer research to modify thermal and mechanical properties.
• Academic & Industrial R&D: A valuable tool for methodological studies in ring-opening and functionalization reactions.

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 1,2-Dimethyl-, Ethyl Ester (9Ci)
CAS No.	139229-61-1
Molecular Formula	C8H14O2
Molecular Weight	142.20 g/mol
Synonyms	Ethyl 1,2-Dimethylcyclopropanecarboxylate; 1,2-Dimethylcyclopropanecarboxylic Acid Ethyl Ester; Ethyl (1,2-Dimethylcyclopropyl)carboxylate; (1,2-Dimethylcyclopropyl)formic Acid Ethyl Ester; 9CI Identifier Name; Cyclopropanecarboxylic acid, 1,2-dimethyl-, ethyl ester; Ethyl 1,2-dimethylcyclopropane-1-carboxylate
EINECS	Contact for details

Quality Control

Our Cyclopropanecarboxylic Acid, 1,2-Dimethyl-, Ethyl Ester (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing including GC, HPLC, and NMR to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and available upon request, supporting compliance in regulated applications.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Specific Gravity (20°C)	0.950 - 0.980
Refractive Index (20°C)	1.430 - 1.450

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