Description

Cyclopentanecarboxylic Acid, 2-Ethylidene-, Methyl Ester, (Z)- (9Ci) is a specialized organic ester compound with the CAS number 172981-49-6. This chemical serves as a valuable intermediate and building block in advanced organic synthesis, prized for its unique cyclopentane-based structure and functional ester group. It is primarily sought by research and development chemists and process engineers in the pharmaceutical, agrochemical, and fine chemical industries for creating novel active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for compounds targeting central nervous system or metabolic diseases.
• Agrochemical Synthesis: Used as a precursor in the manufacture of advanced pesticides, herbicides, and plant growth regulators, leveraging its complex ring structure.
• Fine Chemical Production: Serves as a critical building block for synthesizing specialty chemicals, including flavors, fragrances, and advanced materials.
• Organic Synthesis Research: Employed in academic and industrial R&D laboratories for methodological studies, catalysis development, and the construction of complex natural product analogs.
• Polymer Modifier: Can be utilized as a monomer or co-monomer in the synthesis of specialty polymers with tailored thermal or mechanical properties.

Basic Information

Product Name	Cyclopentanecarboxylic Acid, 2-Ethylidene-, Methyl Ester, (Z)- (9Ci)
CAS No.	172981-49-6
Molecular Formula	C9H14O2
Molecular Weight	154.21 g/mol
Synonyms	(Z)-2-Ethylidenecyclopentanecarboxylic acid methyl ester; Methyl (Z)-2-ethylidenecyclopentanecarboxylate; 2-Ethylidenecyclopentanecarboxylic Acid Methyl Ester; (2Z)-2-Ethylidenecyclopentanecarboxylic Acid Methyl Ester; Cyclopentanecarboxylic acid, 2-ethylidene-, methyl ester, (Z)-; Methyl (2Z)-2-ethylidene-1-cyclopentanecarboxylate
EINECS	Contact for details

Quality Control

Our Cyclopentanecarboxylic Acid, 2-Ethylidene-, Methyl Ester, (Z)- (9Ci) is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support cGMP and ISO standards for production where required.

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, or at controlled room temperature for short-term use. Keep container tightly sealed when not in use to prevent moisture absorption and volatilization.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Purity (GC)	≥ 96.0%
Isomeric Purity (Z-isomer)	≥ 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.