Description

Benzenethiosulfonic Acid S-Phenyl Ester is a specialized organosulfur compound with the CAS number 1212-08-4. This chemical serves as a versatile intermediate and reagent, valued for its ability to introduce the phenylsulfonylthio (PhSO2S-) group into target molecules. It is primarily sought after by R&D chemists and process engineers in the pharmaceutical and agrochemical sectors for applications in synthesis, cross-coupling reactions, and as a building block for more complex sulfur-containing compounds.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfur-based functional groups.
• Agrochemical Synthesis: Serves as a key building block in the production of herbicides, fungicides, and other crop protection agents.
• Polymer Chemistry: Acts as a modifier or chain-transfer agent in the synthesis of specialty polymers and materials.
• Cross-Coupling Reagent: Utilized in palladium-catalyzed and other metal-mediated coupling reactions to form carbon-sulfur bonds.
• Chemical Research: A valuable reagent in organic synthesis laboratories for developing new methodologies and compounds.
• Ligand Precursor: Can be used to prepare sulfur-based ligands for catalysis and coordination chemistry.

Basic Information

Product Name	Benzenethiosulfonic Acid S-Phenyl Ester
CAS No.	1212-08-4
Molecular Formula	C12H10O2S2
Molecular Weight	250.34 g/mol
Synonyms	S-Phenyl benzenethiosulfonate; Phenyl benzenethiosulfonate; Benzenesulfonothioic acid S-phenyl ester; Diphenyl thiosulfonate; Phenylsulfonyl phenyl sulfide; Thiophenyl benzenesulfonate; Phenyl thiosulfonate; Phenylsulfonylsulfanylbenzene
EINECS	214-935-9

Quality Control

Our Benzenethiosulfonic Acid S-Phenyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This compound is light-sensitive (store away from light) and should be handled under an inert atmosphere for long-term stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.