Description

4-Ethyl-3-(Methoxycarbonyl)-5-Methyl-3,4-Didehydro-γ-Butyrolactone is a high-purity, specialized lactone derivative serving as a critical synthetic intermediate. Its value lies in its unique molecular scaffold, which enables the construction of complex heterocyclic compounds and active pharmaceutical ingredients (APIs). This product is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors seeking to innovate and scale novel synthetic pathways.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly in heterocyclic chemistry.
• Agrochemical Research: Used in the development and production of advanced pesticides, herbicides, and plant growth regulators.
• Fine Chemical Synthesis: Serves as a versatile precursor for creating complex organic molecules in custom synthesis and contract manufacturing.
• Material Science: Potential monomer or additive in the research of specialized polymers and advanced functional materials.
• Academic & R&D: A valuable reagent for methodological studies and exploring new chemical reactions in university and industrial research laboratories.

Basic Information

Product Name	4-Ethyl-3-(Methoxycarbonyl)-5-Methyl-3,4-Didehydro-γ-Butyrolactone
CAS No.	142438-64-0
Molecular Formula	C9H12O4
Molecular Weight	184.19 g/mol
Synonyms	3-Carbomethoxy-4-ethyl-5-methyl-3,4-didehydro-2(5H)-furanone; 4-Ethyl-5-methyl-3-(methoxycarbonyl)-3,4-dihydro-2(5H)-furanone; 3-Methoxycarbonyl-4-ethyl-5-methyl-3,4-didehydro-2(5H)-furanone; 4-Ethyl-3-methoxycarbonyl-5-methyl-3,4-didehydro-γ-butyrolactone; γ-Butyrolactone, 3,4-didehydro-4-ethyl-3-(methoxycarbonyl)-5-methyl-; (3R*,4R*)-rel-4-Ethyl-5-methyl-3-[(methoxycarbonyl)]-3,4-dihydro-2(5H)-furanone
EINECS	Contact for details

Quality Control

Our 4-Ethyl-3-(Methoxycarbonyl)-5-Methyl-3,4-Didehydro-γ-Butyrolactone is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Purity (GC)	≥ 97.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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