Description

1-Cyclopentene-1-Carboxylicacid,4-Methyl-,Methylester,(S)-(9Ci) is a high-purity, chiral cyclopentene derivative, a valuable building block in advanced organic synthesis. Its defined stereochemistry and functionalized cyclopentene core make it a critical intermediate for constructing complex molecular architectures with precise spatial orientation. This compound is essential for research and development chemists in the pharmaceutical and agrochemical industries, particularly for synthesizing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel active pharmaceutical ingredients (APIs), especially in therapeutic areas requiring stereospecificity.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides where the specific stereochemistry of the molecule can influence biological activity.
• Fine Chemical Manufacturing: Serves as a specialized building block for creating complex flavors, fragrances, and other high-value specialty chemicals.
• Academic & Industrial R&D: Employed in methodological studies and process chemistry development for new synthetic routes involving cyclopentene frameworks.
• Material Science Research: Potential monomer or precursor for developing novel polymers with specific optical or structural properties.

Basic Information

Product Name	1-Cyclopentene-1-Carboxylicacid,4-Methyl-,Methylester,(S)-(9Ci)
CAS No.	128471-66-9
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	(S)-4-Methyl-1-cyclopentene-1-carboxylic acid methyl ester; Methyl (S)-4-methyl-1-cyclopentene-1-carboxylate; (S)-Methyl 4-methyl-1-cyclopentene-1-carboxylate; (1S)-4-Methyl-1-cyclopentene-1-carboxylic acid methyl ester; (S)-4-Methylcyclopent-1-ene-1-carboxylic acid methyl ester; 1-Cyclopentene-1-carboxylic acid, 4-methyl-, methyl ester, (S)-; (S)-4-Methyl-1-cyclopentenecarboxylic acid methyl ester
EINECS	Contact for details

Quality Control

Our 1-Cyclopentene-1-Carboxylicacid,4-Methyl-,Methylester,(S)-(9Ci) is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) detailing identity, purity, and chiral excess are provided with every shipment to guarantee traceability and consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider storing under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/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.