Description

2,5-Thiophenedione,3,4-Difluoro-(9Ci) is a high-purity fluorinated heterocyclic building block with the CAS number 142453-19-8. This compound is valued for its unique electronic properties and reactivity, making it a critical intermediate in advanced synthetic chemistry. It is primarily sought by researchers and manufacturers in the pharmaceutical and agrochemical industries for the development of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon for the synthesis of fluorinated drug candidates, particularly in oncology and central nervous system (CNS) therapeutic areas.
• Agrochemical Research: Used in the development of new-generation herbicides and pesticides, where the fluorine atoms enhance biological activity and environmental stability.
• Material Science: Serves as a precursor for functional polymers and organic electronic materials, such as semiconductors and conductive polymers.
• Chemical Synthesis: Acts as a versatile building block in organic synthesis for constructing complex, fluorinated heterocyclic scaffolds.
• Ligand & Catalyst Development: Employed in the design of novel ligands and organocatalysts for asymmetric synthesis and transition metal catalysis.

Basic Information

Product Name	2,5-Thiophenedione,3,4-Difluoro-(9Ci)
CAS No.	142453-19-8
Molecular Formula	C4F2O2S
Molecular Weight	150.10 g/mol
Synonyms	3,4-Difluoro-2,5-thiophenedione; 3,4-Difluorothiophene-2,5-dione; 2,5-Dioxo-3,4-difluorothiophene; 3,4-Difluoromaleic anhydride sulfide; Difluorinated thiophenedione; Thiophene-2,5-dione, 3,4-difluoro-; (9CI) Identifier
EINECS	Contact for details

Quality Control

Every batch of 2,5-Thiophenedione,3,4-Difluoro-(9Ci) is manufactured under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance 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 (15-25°C). Due to its sensitivity to fluoride/strong alkali, keep away from incompatible materials. The container should be kept tightly sealed to prevent contamination and moisture absorption.

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.