Description

3-Cyclopentene-1-Carboxylicacid,3-Methyl-,Methylester(9Ci) is a specialized organic ester building block with a functionalized cyclopentene core, offering unique reactivity for advanced chemical synthesis. This compound matters as a versatile intermediate for constructing complex molecular architectures, particularly in the development of pharmaceuticals and fine chemicals. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries seeking to introduce chiral centers and constrained ring systems.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), especially those containing constrained carbocyclic or proline-like structures.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators that require specific stereochemistry.
• Fine Chemical Production: Serves as a precursor for flavors, fragrances, and advanced material monomers where its cyclic olefin and ester functionality are valuable.
• Academic & Industrial Research: Employed in methodological chemistry research, including Diels-Alder reactions, asymmetric hydrogenations, and ring-opening polymerizations.
• Material Science: Potential monomer or cross-linking agent for specialty polymers with tailored thermal and mechanical properties.

Basic Information

Product Name	3-Cyclopentene-1-Carboxylicacid,3-Methyl-,Methylester(9Ci)
CAS No.	80137-82-2
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	Methyl 3-methyl-3-cyclopentene-1-carboxylate; 3-Methyl-3-cyclopentene-1-carboxylic acid methyl ester; 3-Methylcyclopent-3-ene-1-carboxylic acid methyl ester; 3-Methyl-3-cyclopentenecarboxylic acid methyl ester; 1-Cyclopentene-1-carboxylic acid, 3-methyl-, methyl ester; Methyl 3-methyl-1-cyclopentenecarboxylate
EINECS	Contact for details

Quality Control

Our 3-Cyclopentene-1-Carboxylicacid,3-Methyl-,Methylester(9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific customer or regulatory requirements.

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 strong bases and incompatible materials such as strong oxidizing agents. For long-term storage, consider under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Specific Rotation (if chiral)	Contact for details

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