Description

4-Fluorobenzenesulfinic Acid Sodium Salt is a versatile organosulfur compound and a key synthetic intermediate in modern organic chemistry. Its value lies in its role as a nucleophilic sulfinate anion source, enabling the efficient introduction of the 4-fluorophenylsulfinyl moiety into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for the synthesis of sulfones, sulfonamides, and other sulfur-containing bioactive molecules.

Application

• Pharmaceutical Intermediate: A critical building block for synthesizing active pharmaceutical ingredients (APIs) and drug candidates containing aryl sulfone or sulfonamide functional groups.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides where the fluorinated phenylsulfinyl group contributes to biological activity and metabolic stability.
• Material Science Research: Employed in the preparation of specialty polymers, ligands for catalysis, and advanced organic electronic materials.
• Cross-Coupling Reactions: Serves as a coupling partner in palladium-catalyzed reactions, such as with aryl halides, for C-S bond formation.
• Chemical Research & Development: A valuable reagent for method development in organic synthesis and for exploring new sulfinylation pathways in academic and industrial R&D labs.

Basic Information

Product Name	4-Fluorobenzenesulfinic Acid Sodium Salt
CAS No.	369-51-7
Molecular Formula	C6H4FNaO2S
Molecular Weight	182.15 g/mol
Synonyms	Sodium 4-Fluorobenzenesulfinate; Benzenesulfinic acid, 4-fluoro-, sodium salt (1:1); p-Fluorobenzenesulfinic Acid Sodium Salt; 4-Fluorophenylsulfinic Acid Sodium Salt; Sodium p-Fluorobenzenesulfinate; 4-Fluoro Sodium Benzenesulfinate; 4-Fluorobenzene Sodium Sulfinate; Sodium (4-fluorophenyl)sulfinate
EINECS	206-728-6

Quality Control

Our 4-Fluorobenzenesulfinic Acid Sodium Salt is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR for structural confirmation, and ICP-MS for heavy metal screening, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Complies with ICH guidelines

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