Description

2-Methyl-3-Methylene-1-Cyclopentanecarboxylic Acid Methyl Ester is a specialized, high-purity cyclopentane derivative that serves as a critical chiral building block and intermediate in advanced organic synthesis. Its unique bicyclic structure with an exocyclic methylene group makes it a valuable precursor for synthesizing complex molecules, particularly in the pharmaceutical and fine chemical sectors. This compound is essential for researchers and manufacturers developing active pharmaceutical ingredients (APIs), agrochemicals, and novel fragrances who require reliable access to high-quality, structurally defined intermediates.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Fine Chemical Production: Serves as a versatile building block for creating specialty chemicals, catalysts, and ligands.
• Fragrance & Flavor Industry: A potential intermediate for synthesizing novel musk compounds and other aroma chemicals.
• Material Science Research: Investigated as a monomer or precursor for developing novel polymers with specific properties.
• Academic & R&D Laboratories: Utilized in methodological studies and the development of new synthetic pathways in organic chemistry.

Basic Information

Product Name	2-Methyl-3-Methylene-1-Cyclopentanecarboxylic Acid Methyl Ester
CAS No.	74764-25-3
Molecular Formula	C9H14O2
Molecular Weight	154.21 g/mol
Synonyms	Methyl 2-methyl-3-methylenepentane-1-carboxylate; Methyl 2-methyl-3-methylenepentanoate; 1-Cyclopentanecarboxylic acid, 2-methyl-3-methylene-, methyl ester; 2-Methyl-3-methylenepentanoic acid methyl ester; 2-Methyl-3-methylenepentanoic acid, methyl ester; 2-Methyl-3-methylenepentanoic acid methyl ester (CAS 74764-25-3)
EINECS	Contact for details

Quality Control

Our 2-Methyl-3-Methylene-1-Cyclopentanecarboxylic Acid Methyl Ester is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (NMR, IR), to verify identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment. We support cGMP and ISO 9001 standards for pharmaceutical and industrial applications.

Storage

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

Specification

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

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