Description

2,4-Cyclopentadiene-1-Carboxylicacid,1,3-Dimethyl-,Methylester(9Ci) CAS NO 71242-68-7 is a specialized dimethyl-substituted cyclopentadiene carboxylic acid ester, serving as a versatile and reactive intermediate in advanced organic synthesis. Its unique sterically hindered structure makes it a valuable precursor for constructing complex molecular frameworks, particularly in the development of fine chemicals and functional materials. This compound is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors for applications requiring tailored cyclopentadiene derivatives.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing novel active pharmaceutical ingredients (APIs), especially those with complex polycyclic or sterically constrained structures.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where the cyclopentadiene core contributes to specific biological activity.
• Ligand and Catalyst Development: Serves as a precursor for creating specialized ligands in organometallic chemistry and homogeneous catalysis.
• Fine Chemical Production: Employed in the multistep synthesis of high-value specialty chemicals, flavors, and fragrances.
• Polymer & Material Science: Acts as a monomer or modifying agent in the development of specialty polymers with unique thermal or optical properties.
• Academic & Industrial Research: A critical reagent for methodological studies in organic synthesis, including Diels-Alder reactions and other cycloadditions.

Basic Information

Product Name	2,4-Cyclopentadiene-1-Carboxylicacid,1,3-Dimethyl-,Methylester(9Ci)
CAS No.	71242-68-7
Molecular Formula	C9H12O2
Molecular Weight	152.19 g/mol
Synonyms	1,3-Dimethyl-2,4-cyclopentadiene-1-carboxylic acid methyl ester; Methyl 1,3-dimethylcyclopentadiene-1-carboxylate; 1,3-Dimethylcyclopenta-2,4-diene-1-carboxylic acid methyl ester; 1-Carbomethoxy-1,3-dimethylcyclopentadiene; 1-Methoxycarbonyl-1,3-dimethylcyclopentadiene
EINECS	Contact for details

Quality Control

Every batch of 2,4-Cyclopentadiene-1-Carboxylicacid,1,3-Dimethyl-,Methylester(9Ci) is produced and tested under a strict quality management system. Our products undergo rigorous quality testing, including chromatographic purity analysis and identity confirmation, to ensure compliance with industry standards and customer specifications. Certificates of Analysis (COA) detailing batch-specific results are available upon request to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. 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)	≥ 95.0% (Standard Grade)
Water Content (KF)	≤ 0.5%

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