Description

Cyclopentanecarboxylic Acid, 3-Methyl-, Methyl Ester, trans- (9Ci) is a high-purity, stereochemically defined organic ester that serves as a critical chiral intermediate and building block in advanced chemical synthesis. Its defined trans-configuration and ester functionality make it a valuable synthon for constructing complex molecular architectures with precise stereochemistry. This compound is essential for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in the development of prostaglandins, terpenoids, and other bioactive molecules with complex ring systems.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where its cyclopentane core contributes to specific biological activity and environmental profiles.
• Flavor & Fragrance Industry: Serves as a precursor for the synthesis of specific musky, amber, or woody aroma chemicals, leveraging the structural characteristics of the methylated cyclopentane ring.
• Organic Synthesis & Catalysis Research: Employed as a model substrate or ligand precursor in asymmetric synthesis and catalysis development due to its defined stereochemistry.
• Material Science: Acts as a monomer or modifying agent in the synthesis of specialized polymers and liquid crystals, where the rigid cyclopentane structure can influence material properties.

Basic Information

Product Name	Cyclopentanecarboxylic Acid, 3-Methyl-, Methyl Ester, trans- (9Ci)
CAS No.	126110-37-0
Molecular Formula	C8H14O2
Molecular Weight	142.20 g/mol
Synonyms	trans-3-Methylcyclopentanecarboxylic acid methyl ester; Methyl trans-3-methylcyclopentanecarboxylate; (1R,3R)-3-Methylcyclopentanecarboxylic acid methyl ester; (1S,3S)-3-Methylcyclopentanecarboxylic acid methyl ester; trans-Methyl 3-methylcyclopentanecarboxylate; 3-Methylcyclopentanecarboxylic Acid Methyl Ester, trans-; Methyl 3-methyl-1-cyclopentanecarboxylate, trans-
EINECS	Contact for details

Quality Control

Our Cyclopentanecarboxylic Acid, 3-Methyl-, Methyl Ester, trans- (9Ci) is produced under strict quality management systems. Every batch undergoes comprehensive analytical testing, including chiral purity analysis by GC or HPLC, to ensure high chemical and isomeric purity suitable for demanding synthetic applications. A detailed Certificate of Analysis (COA) providing batch-specific data for identity, purity, and impurities is available upon request, supporting your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 2°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and volatilization.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Chiral Purity (Chiral GC/HPLC)	≥ 98.0% trans-isomer
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.