Description

1-Cyclopentene-1-Carboxylicacid,3-Oxo-,Methylester(9Ci) is a specialized organic building block and a key intermediate in advanced synthetic chemistry. This compound matters for its role as a versatile precursor in the synthesis of complex molecules, particularly in pharmaceutical research and fine chemical manufacturing. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing novel molecular architectures.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with cyclopentene or fused-ring structures.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Fine Chemical Production: Serves as a key precursor for manufacturing specialty chemicals, dyes, and complex organic compounds.
• Academic & Industrial R&D: Employed in organic synthesis laboratories for methodological development and the creation of new chemical entities.
• Material Science Research: Investigated as a monomer or precursor for specialty polymers and advanced organic materials.

Basic Information

Product Name	1-Cyclopentene-1-Carboxylicacid,3-Oxo-,Methylester(9Ci)
CAS No.	108384-35-6
Molecular Formula	C8H10O3
Molecular Weight	154.16 g/mol
Synonyms	3-Oxo-1-cyclopentene-1-carboxylic acid methyl ester; Methyl 3-oxo-1-cyclopentene-1-carboxylate; 1-Cyclopentene-1-carboxylic acid, 3-oxo-, methyl ester; 3-Oxocyclopent-1-enecarboxylic acid methyl ester; Methyl 3-oxocyclopent-1-enecarboxylate; 1-Cyclopentene-1-carboxylic acid, 3-oxo-, methyl ester (9CI)
EINECS	Contact for details

Quality Control

Our 1-Cyclopentene-1-Carboxylicacid,3-Oxo-,Methylester(9Ci) is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity for research and industrial use. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, identity, and impurity profiles. Our quality systems are designed to support cGMP and ISO standards where required by our clients' applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are sealed to prevent exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (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.