Description

Cyclopentanecarboxylic Acid, 2-Methyl-, 3-Methyl-2-Butenyl Ester, (1R,2R)-Rel- (9Ci) is a high-purity, stereochemically defined chiral ester of significant interest in advanced organic synthesis. This compound matters as a sophisticated building block for creating complex molecules with precise three-dimensional architecture, which is critical for developing active pharmaceutical ingredients (APIs) and specialty agrochemicals. It is primarily needed by research chemists and process development scientists in the pharmaceutical, fragrance, and fine chemical industries who require enantiomerically enriched intermediates.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of novel therapeutic agents, particularly in medicinal chemistry programs targeting specific biological receptors.
• Agrochemical Research: Used in developing enantiomerically pure active ingredients for next-generation herbicides and pesticides, where stereochemistry impacts efficacy and environmental profile.
• Fragrance & Flavor Synthesis: Serves as a precursor for creating unique, stereochemically-defined odorants and flavor molecules with specific sensory characteristics.
• Asymmetric Catalysis: Employed as a substrate or ligand precursor in the development and testing of new chiral catalysts for stereoselective transformations.
• Academic & Industrial R&D: A valuable tool for methodological studies in organic synthesis, enabling research into new cyclopentane-based frameworks.

Basic Information

Product Name	Cyclopentanecarboxylic Acid, 2-Methyl-, 3-Methyl-2-Butenyl Ester, (1R,2R)-Rel- (9Ci)
CAS No.	658692-06-9
Molecular Formula	C12H20O2
Molecular Weight	196.29 g/mol
Synonyms	(1R,2R)-rel-2-Methylcyclopentanecarboxylic Acid 3-Methyl-2-butenyl Ester; (1R,2R)-2-Methylcyclopentane-1-carboxylic Acid Prenalyl Ester; (1R,2R)-rel-2-Methyl-1-cyclopentanecarboxylic Acid 3,3-Dimethylallyl Ester; 3-Methyl-2-butenyl (1R,2R)-rel-2-methylcyclopentane-1-carboxylate; Prenalyl (1R,2R)-rel-2-methylcyclopentane-1-carboxylate; (1R,2R)-2-Methylcyclopentylcarboxylic Acid Isopentenyl Ester
EINECS	Contact for details

Quality Control

Our production of this chiral intermediate adheres to stringent quality protocols suitable for research and development applications. Each batch is characterized using advanced analytical techniques including chiral HPLC, GC, and NMR to confirm identity, stereochemical purity (enantiomeric excess), and chemical purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to ensure traceability and support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Water Content (KF)	≤ 0.5%

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