Description

Cyclopentanecarboxylic Acid, 1-Acetyl-2-Ethyl-5-Methylene-, Methyl Ester, (1R,2R)-Rel- (9Ci) is a high-purity, stereochemically defined chiral building block of significant interest in advanced organic synthesis. Its complex, functionalized cyclopentane core makes it a valuable intermediate for constructing intricate molecular architectures with precise three-dimensional control. This compound is primarily utilized by research and development chemists in the pharmaceutical and agrochemical industries, where it serves as a key precursor for the synthesis of novel active ingredients and complex natural product analogs. The product is supplied with a CAS number of 688799-56-6.

Application

• Pharmaceutical Intermediate: A critical chiral synthon for the research and development of new active pharmaceutical ingredients (APIs), particularly those targeting central nervous system (CNS) disorders and metabolic diseases.
• Agrochemical Synthesis: Used in the creation of advanced, stereoselective pesticides and herbicides, where the specific (1R,2R) configuration can influence biological activity and environmental degradation profiles.
• Asymmetric Catalysis Research: Serves as a sophisticated substrate or ligand precursor in the development and testing of new chiral catalysts and methodologies.
• Fragrance and Flavor Chemistry: The functionalized ester and ketone groups provide a complex backbone for synthesizing novel odorants and flavor compounds with unique sensory properties.
• Material Science Precursor: Potential use in the synthesis of specialized monomers for polymers with tailored thermal or optical properties, given its rigid, multi-functionalized cyclic structure.
• Academic and Contract Research: An essential tool for universities and CROs (Contract Research Organizations) conducting cutting-edge synthetic organic chemistry and medicinal chemistry programs.

Basic Information

Item	Detail
Product Name	Cyclopentanecarboxylic Acid, 1-Acetyl-2-Ethyl-5-Methylene-, Methyl Ester, (1R,2R)-Rel- (9Ci)
CAS No.	688799-56-6
Molecular Formula	C12H18O3
Molecular Weight	210.27 g/mol
Synonyms	(1R,2R)-rel-1-Acetyl-2-ethyl-5-methylenepentane-1-carboxylic acid methyl ester; Methyl (1R,2R)-rel-1-acetyl-2-ethyl-5-methylenepentane-1-carboxylate; 1-Acetyl-2-ethyl-5-methylenecyclopentanecarboxylic acid methyl ester, (1R,2R)-rel-; (1R,2R)-rel-Methyl 1-acetyl-2-ethyl-5-methylenepentane-1-carboxylate; Chiral cyclopentane ester derivative; Functionalized cyclopentane building block
EINECS	Contact for details

Quality Control

Every batch of Cyclopentanecarboxylic Acid, 1-Acetyl-2-Ethyl-5-Methylene-, Methyl Ester, (1R,2R)-Rel- (9Ci) is produced and analyzed under a strict quality management system. Our products undergo rigorous quality testing, including chiral purity verification, to ensure compliance with the high standards required for research and process development. A comprehensive Certificate of Analysis (COA), detailing identity, purity, enantiomeric excess, and impurity profiles, is provided with each shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 98.0% ee
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.