Description

2-Cyclopentene-1-Carboxylic Acid, 2-Formyl-, Methyl Ester (9Ci) is a specialized, high-purity chemical intermediate featuring a reactive formyl group and an unsaturated ester moiety within a cyclopentene ring. This unique structure makes it a valuable building block for synthesizing complex molecules in advanced research and fine chemical production. It is primarily sought by pharmaceutical, agrochemical, and advanced material scientists for applications in heterocyclic chemistry, ligand synthesis, and the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those containing fused or functionalized ring systems.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and plant growth regulators.
• Ligand and Catalyst Development: Serves as a starting material for creating specialized ligands used in asymmetric catalysis and metal-organic frameworks (MOFs).
• Fine Chemical Production: Employed in the multistep synthesis of complex fragrances, flavors, and other high-value specialty chemicals.
• Academic & Industrial Research: A versatile reagent for methodological studies in organic synthesis, including cycloaddition and cross-coupling reactions.
• Material Science: Potential monomer or cross-linking agent in the development of polymers with specific thermal or optical properties.

Basic Information

Product Name	2-Cyclopentene-1-Carboxylic Acid, 2-Formyl-, Methyl Ester (9Ci)
CAS No.	277751-22-1
Molecular Formula	C8H10O3
Molecular Weight	154.16 g/mol
Synonyms	Methyl 2-formylcyclopent-1-ene-1-carboxylate; 2-Formyl-1-cyclopentenecarboxylic Acid Methyl Ester; 1-Cyclopentene-1-carboxylic acid, 2-formyl-, methyl ester; Methyl 2-formyl-1-cyclopentenecarboxylate; 2-Formylcyclopent-1-enecarboxylic acid methyl ester; 2-Cyclopentene-1-carboxylic acid, 2-formyl-, methyl ester
EINECS	Contact for details

Quality Control

We supply 2-Cyclopentene-1-Carboxylic Acid, 2-Formyl-, Methyl Ester (9Ci) in high-purity grades suitable for research and commercial synthesis. Our products undergo rigorous quality testing, including chromatographic purity analysis and identity confirmation, to ensure batch-to-batch consistency and compliance with customer specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (typically 15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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