Description

3-Thiophenecarboxylicacid,2-Ethoxy-4,5-Dihydro-4-Oxo-,Ethylester(9Ci) is a specialized heterocyclic building block featuring a fused thiophene and lactone structure. This compound is valued for its unique molecular architecture, which makes it a versatile intermediate in advanced organic synthesis and pharmaceutical research. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecules and exploring novel chemical spaces.

Application

• Pharmaceutical Intermediate: A key synthon for the development of active pharmaceutical ingredients (APIs), particularly those targeting central nervous system or metabolic diseases.
• Agrochemical Research: Used in the synthesis of novel herbicides, fungicides, and insecticides, leveraging its heterocyclic core for bioactivity.
• Material Science Precursor: Serves as a building block for organic electronic materials, such as semiconductors or conductive polymers, due to the thiophene moiety.
• Chemical Synthesis: Employed in academic and industrial R&D for constructing complex fused-ring systems and exploring new reaction pathways.
• Ligand and Catalyst Development: Potential use in designing novel ligands for catalysis or metal-organic frameworks (MOFs).

Basic Information

Product Name	3-Thiophenecarboxylicacid,2-Ethoxy-4,5-Dihydro-4-Oxo-,Ethylester(9Ci)
CAS No.	210891-58-0
Molecular Formula	C9H10O4S
Molecular Weight	214.24 g/mol
Synonyms	2-Ethoxy-4,5-dihydro-4-oxo-3-thiophenecarboxylic acid ethyl ester; Ethyl 2-ethoxy-4,5-dihydro-4-oxothiophene-3-carboxylate; 3-Thiophenecarboxylic acid, 2-ethoxy-4,5-dihydro-4-oxo-, ethyl ester; 210891-58-0; Ethyl 2-ethoxy-4-oxo-4,5-dihydrothiophene-3-carboxylate; 4,5-Dihydro-2-ethoxy-4-oxo-3-thiophenecarboxylic Acid Ethyl Ester
EINECS	Contact for details

Quality Control

Our production of 3-Thiophenecarboxylicacid,2-Ethoxy-4,5-Dihydro-4-Oxo-,Ethylester(9Ci) adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.