Description

Diethyl (3-Thienyl)Malonate is a high-purity organic building block and versatile synthetic intermediate. This compound is valued for its reactive malonate ester group and the thiophene heterocycle, enabling its use in complex organic synthesis. It is primarily sought by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors for developing active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing thiophene motifs for various therapeutic areas.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides, leveraging the thiophene ring for bioactivity.
• Organic Electronics Precursor: Serves as a starting material for the development of conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs).
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands for metal-organic frameworks (MOFs) and homogeneous catalysis.
• Chemical Research (R&D): A crucial reagent in academic and industrial R&D for exploring new carbon-carbon bond formation reactions and heterocyclic chemistry.
• Fine Chemical Production: Intermediate in the multi-step synthesis of complex flavors, fragrances, and other specialty fine chemicals.

Basic Information

Product Name	Diethyl (3-Thienyl)Malonate
CAS No.	37784-67-1
Molecular Formula	C11H14O4S
Molecular Weight	242.29 g/mol
Synonyms	Diethyl 3-thienylmalonate; 3-Thiophenemalonic acid diethyl ester; Diethyl 3-thiophenemalonate; (3-Thienyl)malonic acid diethyl ester; Propanedioic acid, 2-(3-thienyl)-, diethyl ester; Diethyl (3-thienyl)propanedioate; 2-(Thiophen-3-yl)malonic acid diethyl ester
EINECS	Contact for details

Quality Control

Our Diethyl (3-Thienyl)Malonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are 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, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible materials. For long-term storage, consider under an inert atmosphere 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%

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