Description

Cyclopentanecarboxylic Acid, 2,2-Diethyl-5-Oxo-, Methyl Ester (9Ci) is a specialized organic ester compound with the CAS registry number 609806-73-7. This chemical serves as a valuable high-purity intermediate and building block in advanced organic synthesis, where its unique functionalized cyclopentane structure enables the creation of complex molecules. It is primarily required by pharmaceutical R&D and fine chemical manufacturers for developing active ingredients and novel compounds.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel active pharmaceutical ingredients (APIs), particularly for complex cyclic structures.
• Fine Chemical Synthesis: Used as a specialized building block for synthesizing agrochemicals, flavors, fragrances, and advanced materials.
• Organic Chemistry Research: Employed in academic and industrial laboratories for methodological studies and the construction of stereochemically defined molecules.
• Ligand and Catalyst Development: Serves as a precursor for creating chiral ligands or organocatalysts used in asymmetric synthesis.
• Polymer Modification: Potential use as a monomer or modifier for introducing specific functional groups into polymer backbones to alter material properties.

Basic Information

Item	Details
Product Name	Cyclopentanecarboxylic Acid, 2,2-Diethyl-5-Oxo-, Methyl Ester (9Ci)
CAS No.	609806-73-7
Molecular Formula	C11H18O3
Molecular Weight	198.26 g/mol
Synonyms	Methyl 2,2-diethyl-5-oxocyclopentanecarboxylate; 2,2-Diethyl-5-oxocyclopentanecarboxylic acid methyl ester; 5-Oxo-2,2-diethylcyclopentanecarboxylic Acid Methyl Ester; Cyclopentanecarboxylic acid, 2,2-diethyl-5-oxo-, methyl ester; Methyl 5-oxo-2,2-diethylcyclopentanecarboxylate
EINECS	Contact for details

Quality Control

Our production of Cyclopentanecarboxylic Acid, 2,2-Diethyl-5-Oxo-, Methyl Ester (9Ci) adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality system is designed to support cGMP requirements for pharmaceutical applications.

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 under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
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.