Description

Ethyl 2-Methyl-4-Oxocyclopent-2-Ene-1-Carboxylate is a versatile, high-purity organic building block and chiral synthon. This compound is valued for its functionalized cyclopentenone core, which is a key structural motif in complex organic synthesis. It is primarily sought after by research and development chemists in the pharmaceutical and fine chemical industries for the synthesis of active pharmaceutical ingredients (APIs), natural products, and advanced materials.

Application

• Pharmaceutical Intermediate: A critical chiral building block for the synthesis of prostaglandins, steroids, and other bioactive molecules with complex ring structures.
• Fine Chemical Synthesis: Used in the preparation of specialty chemicals, fragrances, and flavoring agents requiring specific stereochemistry.
• Agrochemical Research: Serves as a precursor in the development of novel pesticides and herbicides with targeted activity.
• Academic & Industrial R&D: Employed in methodological development for asymmetric synthesis, cycloaddition reactions, and catalysis studies.
• Material Science: Potential monomer or precursor for synthesizing specialized polymers and advanced organic materials.

Basic Information

Product Name	Ethyl 2-Methyl-4-Oxocyclopent-2-Ene-1-Carboxylate
CAS No.	17790-74-8
Molecular Formula	C9H12O3
Molecular Weight	168.19 g/mol
Synonyms	Ethyl 2-Methyl-4-oxo-2-cyclopentene-1-carboxylate; 4-Oxo-2-methyl-2-cyclopenten-1-ylacetic acid ethyl ester; 2-Methyl-4-oxocyclopent-2-ene-1-carboxylic acid ethyl ester; Ethyl 2-methyl-1,3-dioxo-2-cyclopentanecarboxylate (tautomer); 2-Cyclopenten-1-acetic acid, 2-methyl-4-oxo-, ethyl ester; NSC 163045; 1-Carbethoxy-2-methyl-4-cyclopentenone
EINECS	Contact for details

Quality Control

We maintain stringent quality control protocols for all our chemical intermediates. Production follows cGMP principles where applicable, and every batch is analyzed to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing purity (typically ≥97% by HPLC), chiral purity (if applicable), and impurity profiles is provided with each shipment to ensure full traceability and compliance with your project specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; keep the container tightly sealed under an inert atmosphere for long-term storage to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Specific Rotation (if chiral)	Contact for details

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