Description

1-Cyclopentene-1-Carboxylic Acid, 4,4-Dimethyl-, Methyl Ester (9Ci) is a specialized organic ester building block with a unique cyclopentene core and gem-dimethyl substitution. This compound matters as a versatile chiral synthon and intermediate for constructing complex molecular architectures in advanced organic synthesis. It is needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for applications such as asymmetric synthesis and the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key chiral building block in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the research and development of new pesticides, herbicides, and plant growth regulators.
• Asymmetric Catalysis: Acts as a substrate or ligand precursor in the development of stereoselective catalytic reactions.
• Fine Chemical Production: Employed in the multi-step synthesis of complex, high-value specialty chemicals and flavors/fragrances.
• Material Science Research: Investigated as a monomer or precursor for novel polymers with specific optical or mechanical properties.
• Academic & Industrial R&D: Utilized in methodological studies and process chemistry for constructing challenging carbon frameworks.

Basic Information

Product Name	1-Cyclopentene-1-Carboxylic Acid, 4,4-Dimethyl-, Methyl Ester (9Ci)
CAS No.	95841-57-9
Molecular Formula	C9H14O2
Molecular Weight	154.21 g/mol
Synonyms	4,4-Dimethyl-1-cyclopentene-1-carboxylic acid methyl ester; Methyl 4,4-dimethyl-1-cyclopentene-1-carboxylate; 4,4-Dimethylcyclopent-1-ene-1-carboxylic Acid Methyl Ester; 1-Cyclopentene-1-carboxylic acid, 4,4-dimethyl-, methyl ester; 95841-57-9; Methyl 4,4-dimethylcyclopent-1-ene-1-carboxylate
EINECS	Contact for details

Quality Control

Our 1-Cyclopentene-1-Carboxylic Acid, 4,4-Dimethyl-, Methyl Ester (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity, identity, and consistency, meeting the stringent requirements for research and process chemistry. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥95.0% (Area %)
Purity (GC)	≥90.0%
Water Content (KF)	≤0.5%

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