Description

3-Fluoro-4,6-Dihydro-Thieno[3,4-B]Thiophene-2-Carboxylic Acid Methyl Ester is a high-value, fluorinated heterocyclic building block essential for advanced organic synthesis. This compound matters for its unique fused thiophene structure, which serves as a critical precursor in the development of novel materials and active pharmaceutical ingredients (APIs). It is primarily needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and materials science industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly those targeting central nervous system (CNS) disorders.
• Agrochemical Synthesis: Used as a building block for creating novel pesticides and herbicides with enhanced efficacy and environmental profiles.
• Organic Electronic Materials: Serves as a precursor in the synthesis of conjugated polymers and small molecules for organic semiconductors, OLEDs, and solar cells.
• Ligand and Catalyst Development: Employed in the design of novel ligands for catalysis and metal-organic frameworks (MOFs).
• Chemical Research: A versatile fluorinated scaffold for method development in synthetic organic chemistry and medicinal chemistry programs.
• Custom Synthesis: Used by contract research and manufacturing organizations (CROs/CMOs) for client-specific projects requiring complex heterocyclic chemistry.

Basic Information

Product Name	3-Fluoro-4,6-Dihydro-Thieno[3,4-B]Thiophene-2-Carboxylic Acid Methyl Ester
CAS No.	1422007-52-0
Molecular Formula	C8H7FO2S2
Molecular Weight	218.27 g/mol
Synonyms	Methyl 3-Fluoro-4,6-dihydrothieno[3,4-b]thiophene-2-carboxylate; 3-Fluoro-4,6-dihydrothieno[3,4-b]thiophene-2-carboxylic acid methyl ester; 1422007-52-0; 3-Fluoro-4,6-dihydrothieno[3,4-b]thiophene-2-carboxylic acid, methyl ester; Methyl 3-fluoro-4,6-dihydrothieno[3,4-b]thiophene-2-carboxylate; 3-Fluoro-4,6-dihydrothieno[3,4-b]thiophene-2-carboxylic acid methyl ester (CAS 1422007-52-0); 3-Fluoro-4,6-dihydrothieno[3,4-b]thiophene-2-carboxylic acid, methyl ester (9CI)
EINECS	Contact for details

Quality Control

Our 3-Fluoro-4,6-Dihydro-Thieno[3,4-B]Thiophene-2-Carboxylic Acid Methyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and MS, to ensure high purity and batch-to-batch consistency suitable for research and development applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep the container tightly sealed to protect from moisture and contamination. Store away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	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.