Description

2-Hydroxy-α-Toluenesulfonic Acid Sultone is a specialized organic intermediate featuring a fused sultone ring structure, which is critical for introducing sulfonate functionality in complex syntheses. This compound matters for its role as a versatile building block in the production of high-performance materials and fine chemicals, offering a reactive handle for further functionalization. It is primarily needed by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for developing new active ingredients and functional additives.

Application

• Pharmaceutical Intermediate: Key synthon in the synthesis of sulfonamide-based drugs and other bioactive molecules.
• Agrochemical Synthesis: Used in creating novel herbicides, fungicides, and plant growth regulators with enhanced properties.
• Polymer Modification: Serves as a monomer or cross-linking agent to impart sulfonic acid groups into polymers for ion-exchange resins or membranes.
• Dye and Pigment Manufacturing: Intermediate in the production of sulfonated dyes and colorants for improved solubility and fastness.
• Surfactant and Detergent Chemistry: Building block for specialized anionic surfactants with unique surface-active properties.
• Chemical Research & Development: Valuable reagent for methodological studies and exploring new reaction pathways in organic chemistry.

Basic Information

Product Name	2-Hydroxy-α-Toluenesulfonic Acid Sultone
CAS No.	10284-44-3
Molecular Formula	C7H6O4S
Molecular Weight	186.18 g/mol
Synonyms	1,2-Benzoxathiol-3-one, 2,2-dioxide; 2-Hydroxybenzenesulfonic acid sultone; 2-Hydroxy-α-toluenesulfonic acid sultone; 3-Hydroxy-1,2-benzoxathiole 2,2-dioxide; o-Hydroxybenzenesulfonic acid sultone; Saccharin intermediate; 1,2-Benzisothiazol-3(2H)-one, 1,1-dioxide (tautomer)
EINECS	233-647-9

Quality Control

Our 2-Hydroxy-α-Toluenesulfonic Acid Sultone is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) with key parameters including assay, related substances, and residual solvents, supporting its use in regulated synthesis. Specifications can be aligned with cGMP and ISO guidelines for critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from strong bases and oxidizing agents. For long-term storage, consider an inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.