Description

Cyclopentanecarboxylic Acid, 1-Hydroxy-2-(1-Methylethenyl)-, Ethyl Ester, (1R,2S)-Rel- (9Ci) is a high-purity, stereochemically defined chiral building block of significant interest in advanced organic synthesis. Its unique fused cyclopentane structure with hydroxyl and vinyl substituents makes it a valuable precursor for constructing complex molecular architectures. This compound is primarily sought after by research and development chemists in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of new active pharmaceutical ingredients (APIs), particularly in areas requiring stereochemical control.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides where specific stereochemistry can influence biological activity.
• Fine Chemical Production: Serves as a versatile building block for synthesizing specialty chemicals, flavors, and fragrances.
• Academic & Industrial Research: A valuable tool in methodological chemistry research for studying cyclization reactions, asymmetric synthesis, and natural product mimicry.
• Material Science Precursor: Potential use in the synthesis of specialized monomers for polymers with tailored properties.

Basic Information

Product Name	Cyclopentanecarboxylic Acid, 1-Hydroxy-2-(1-Methylethenyl)-, Ethyl Ester, (1R,2S)-Rel- (9Ci)
CAS No.	619297-02-8
Molecular Formula	C11H18O3
Molecular Weight	198.26 g/mol
Synonyms	rel-(1R,2S)-1-Hydroxy-2-(prop-1-en-2-yl)cyclopentane-1-carboxylic acid ethyl ester; Ethyl (1R,2S)-rel-1-hydroxy-2-isopropenylcyclopentane-1-carboxylate; (1R,2S)-rel-1-Hydroxy-2-(1-methylethenyl)cyclopentanecarboxylic Acid Ethyl Ester; 1-Hydroxy-2-isopropenylcyclopentane-1-carboxylic acid ethyl ester, (1R,2S)-rel-; Chiral Cyclopentane Ester Building Block
EINECS	Contact for details

Quality Control

Every batch of Cyclopentanecarboxylic Acid, 1-Hydroxy-2-(1-Methylethenyl)-, Ethyl Ester, (1R,2S)-Rel- (9Ci) is produced and tested under a strict quality management system. We provide comprehensive analytical data to ensure identity, purity, and stereochemical integrity, meeting the exacting standards required for research and process development. A Certificate of Analysis (COA) detailing specifications such as chiral purity, chemical purity (by HPLC/GC), and residual solvents is available for each lot upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC/GC)	≥ 95.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% de (diastereomeric excess)
Water Content (KF)	≤ 0.5%

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