Description

2-Methyl-5-Oxo-4,5-Dihydro-1H-Pyrrole-3-Carboxylic Acid Ethyl Ester is a versatile heterocyclic building block and a key intermediate in organic synthesis. Its pyrrolidinone core structure makes it a valuable precursor for the development of pharmaceuticals, agrochemicals, and advanced materials. This compound is primarily sought by research and development chemists, process engineers, and manufacturers in the pharmaceutical, agrochemical, and fine chemical industries.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing active pharmaceutical ingredients (APIs), particularly those containing pyrrolidinone or lactam moieties.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides.
• Fine Chemical Production: Serves as a starting material for synthesizing complex molecules, dyes, and functional materials.
• Academic & Industrial Research: A valuable reagent in medicinal chemistry for structure-activity relationship (SAR) studies and library synthesis.
• Chemical Synthesis: Employed in various organic transformations, including cyclizations, condensations, and as a precursor for other heterocyclic compounds.

Basic Information

Product Name	2-Methyl-5-Oxo-4,5-Dihydro-1H-Pyrrole-3-Carboxylic Acid Ethyl Ester
CAS No.	4189-20-2
Molecular Formula	C8H11NO3
Molecular Weight	169.18 g/mol
Synonyms	Ethyl 2-Methyl-5-oxo-4,5-dihydro-1H-pyrrole-3-carboxylate; 3-Carbethoxy-2-methyl-4-pyrrolidinone; 2-Methyl-4,5-dihydro-5-oxo-1H-pyrrole-3-carboxylic acid ethyl ester; 3-Ethoxycarbonyl-2-methyl-4-pyrrolidinone; 1H-Pyrrole-3-carboxylic acid, 4,5-dihydro-2-methyl-5-oxo-, ethyl ester; Ethyl 3-methyl-5-oxo-1-pyrroline-4-carboxylate
EINECS	224-063-6

Quality Control

Our 2-Methyl-5-Oxo-4,5-Dihydro-1H-Pyrrole-3-Carboxylic Acid Ethyl Ester is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment. We support compliance with global regulatory frameworks, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from strong bases and incompatible organic solvents. For long-term storage, consider an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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