Description

2-Cyclopentene-1-Carboxylicacid,2-Butyl-4-Oxo-,Methylester(9Ci) CAS NO 656831-06-0 is a specialized organic intermediate featuring a cyclopentene core functionalized with a keto and an ester group. This compound matters for its role as a versatile building block in advanced organic synthesis, enabling the construction of complex molecular architectures. It is needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel drug candidates, particularly those with complex cyclic structures.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators requiring specific stereochemistry.
• Fine Chemical Production: Serves as a precursor for specialty chemicals, including flavors, fragrances, and performance materials.
• Academic & Industrial Research: A valuable reagent for methodological studies in organic chemistry, including cycloaddition and functional group transformation reactions.
• Material Science: Potential building block for monomers or additives in the development of specialized polymers.

Basic Information

Product Name	2-Cyclopentene-1-Carboxylicacid,2-Butyl-4-Oxo-,Methylester(9Ci)
CAS No.	656831-06-0
Molecular Formula	C11H16O3
Molecular Weight	196.24 g/mol
Synonyms	2-Butyl-4-oxo-2-cyclopentene-1-carboxylic acid methyl ester; Methyl 2-butyl-4-oxocyclopent-2-ene-1-carboxylate; 2-Cyclopentene-1-carboxylic acid, 2-butyl-4-oxo-, methyl ester; 2-Butyl-4-oxo-2-cyclopenten-1-carboxylic acid methyl ester; 656831-06-0; Methyl 2-butyl-4-oxo-1-cyclopentene-1-carboxylate
EINECS	Contact for details

Quality Control

Our 2-Cyclopentene-1-Carboxylicacid,2-Butyl-4-Oxo-,Methylester(9Ci) is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay (by HPLC), identity (by IR/NMR), and impurity profiles are available upon request to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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