Description

Cyclopropanecarboxylic Acid, 2-Formyl-, Ethyl Ester, (1R-Trans)- (9Ci) is a high-purity chiral building block and synthetic intermediate of significant value in advanced organic synthesis. Its unique cyclopropane ring fused with an aldehyde ester functionality makes it a versatile precursor for constructing complex, stereodefined molecular architectures. This compound is essential for researchers and process chemists in the pharmaceutical and agrochemical industries developing novel active ingredients.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of novel drug candidates, particularly in medicinal chemistry programs targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Synthesis: Used in the research and development of advanced pesticides and herbicides, where the cyclopropane moiety can impart specific biological activity and stability.
• Asymmetric Catalysis & Ligand Development: Serves as a precursor for creating novel chiral ligands and catalysts used in enantioselective transformations.
• Material Science Research: Employed in the synthesis of specialty monomers and polymers with tailored properties for advanced material applications.
• Academic & R&D Laboratories: A valuable reagent for methodological development in organic synthesis and for exploring new chemical spaces in discovery chemistry.

Basic Information

Product Name	Cyclopropanecarboxylic Acid, 2-Formyl-, Ethyl Ester, (1R-Trans)- (9Ci)
CAS No.	109716-50-9
Molecular Formula	C7H10O3
Molecular Weight	142.15 g/mol
Synonyms	(1R,2R)-2-Formylcyclopropanecarboxylic Acid Ethyl Ester; Ethyl (1R,2R)-2-Formylcyclopropanecarboxylate; trans-(1R,2R)-2-Formylcyclopropanecarboxylic Acid Ethyl Ester; (1R-trans)-2-Formylcyclopropanecarboxylic Acid Ethyl Ester; (1R,2R)-Ethyl 2-formylcyclopropanecarboxylate; (1R,2R)-2-Carbethoxycyclopropanecarboxaldehyde; A chiral cyclopropane aldehyde ester
EINECS	Contact for details

Quality Control

Our Cyclopropanecarboxylic Acid, 2-Formyl-, Ethyl Ester, (1R-Trans)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for research and process chemistry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and chiral excess is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place at 2-8°C to maintain stability and prevent oxidation. Allow the container to reach room temperature before opening to minimize moisture ingress.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% ee
Water Content (KF)	≤ 0.5%

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