Description

2,4-Cyclopentadiene-1-Carboxylic Acid, Methyl Ester (9Ci) is a specialized organic ester derivative of cyclopentadiene, serving as a valuable building block in advanced chemical synthesis. This compound matters for its role as a key intermediate in the production of complex molecules, particularly in the pharmaceutical and agrochemical sectors, where its unique structure enables the construction of intricate ring systems. It is primarily needed by R&D chemists and process development teams in fine chemical, pharmaceutical, and material science industries for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of novel drug candidates, especially those containing complex polycyclic frameworks.
• Agrochemical Synthesis: Used in the research and development of new pesticides and herbicides, leveraging its reactive diene system.
• Material Science Research: Serves as a monomer or building block for developing specialty polymers and advanced organic materials with specific electronic or structural properties.
• Organic Synthesis & Catalysis: Employed in Diels-Alder reactions and other cycloaddition processes to construct complex organic molecules in academic and industrial research.
• Fine Chemical Production: Acts as an intermediate for manufacturing dyes, fragrances, and other high-value specialty chemicals.

Basic Information

Item	Details
Product Name	2,4-Cyclopentadiene-1-Carboxylic Acid, Methyl Ester (9Ci)
CAS No.	45657-86-1
Molecular Formula	C7H8O2
Molecular Weight	124.14 g/mol
Synonyms	Methyl 2,4-Cyclopentadiene-1-carboxylate; Methyl Cyclopentadienecarboxylate; 1-Carbomethoxycyclopentadiene; 2,4-Cyclopentadiene-1-carboxylic acid methyl ester; Cyclopentadiene-1-carboxylic acid, methyl ester; Methyl 1-cyclopentadienecarboxylate
EINECS	Contact for details

Quality Control

Our 2,4-Cyclopentadiene-1-Carboxylic Acid, Methyl Ester (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets the high standards required for research and process chemistry. Certificates of Analysis (COA) documenting batch-specific results are available upon request to support your quality assurance and regulatory 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 8°C for long-term stability, although short-term storage at controlled room temperature (15-25°C) is acceptable. Keep container tightly sealed when not in use to minimize exposure to air and moisture.

Specification

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

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