Description

Cyclopropanecarboxylic Acid, Cyclopropylidene-, Ethyl Ester (9Ci) is a specialized organic ester building block characterized by its unique cyclopropylidene and ester functional groups. This compound is of significant value in advanced organic synthesis, particularly for constructing complex molecular architectures requiring strained ring systems. It is primarily sought after by research and development chemists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and intermediates. Its defined structure, referenced by CAS number 136028-47-2, ensures precise and reproducible results in critical synthetic pathways.

Application

This high-purity synthetic intermediate serves as a versatile precursor in several advanced chemical sectors:

• Pharmaceutical Intermediate: Key building block for the synthesis of proprietary drug candidates, especially those targeting central nervous system (CNS) disorders or possessing novel biological activity.
• Agrochemical Synthesis: Used in the research and development of new-generation herbicides, fungicides, and insecticides that leverage the stability and reactivity of the cyclopropane moiety.
• Material Science Research: Employed in the development of specialty polymers and advanced organic materials where the strained ring system can impart unique physical properties.
• Academic & Industrial R&D: Serves as a critical reagent in methodological chemistry research, including studies on ring-opening reactions, cycloadditions, and catalysis.
• Fine Chemical Production: Acts as a precursor for other high-value, complex esters and carboxylic acid derivatives used in flavors, fragrances, and electronic chemicals.

Basic Information

Product Name	Cyclopropanecarboxylic Acid, Cyclopropylidene-, Ethyl Ester (9Ci)
CAS No.	136028-47-2
Molecular Formula	C9H12O2
Molecular Weight	152.19 g/mol
Synonyms	Ethyl Cyclopropylideneacetate; Ethyl 2-Cyclopropylideneacetate; Cyclopropylideneacetic Acid Ethyl Ester; 2-Cyclopropylideneacetic Acid Ethyl Ester; (Cyclopropylidene)acetic Acid Ethyl Ester; Ethyl (Cyclopropylidene)acetate; NSC 406915; AI3-40931
EINECS	Contact for details

Quality Control

Our production of Cyclopropanecarboxylic Acid, Cyclopropylidene-, Ethyl Ester adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity for sensitive synthetic applications. Each lot undergoes comprehensive analytical testing, including chromatographic purity assays and structural confirmation. Certificates of Analysis (COA) detailing all critical specifications are provided with every shipment. We support cGMP compliance for pharmaceutical applications, and our quality system is designed to meet the rigorous standards of global industrial and research customers.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage under an inert atmosphere (nitrogen or argon), please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (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.