Description

3,4-Dimethyl-Benzenesulfinic Acid is a specialized organosulfur compound that serves as a versatile building block and intermediate in advanced organic synthesis. Its value lies in its sulfinic acid functional group, which is a key precursor for generating sulfones, sulfonamides, and other sulfur-containing derivatives critical in modern chemical manufacturing. This product is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and material science industries who require high-purity intermediates for complex synthesis pathways.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs containing sulfone or sulfonamide moieties.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides where the sulfinic acid group is incorporated into the final molecule.
• Polymer & Material Science: Serves as a monomer or modifying agent in the production of specialty polymers, resins, and advanced materials with specific chemical resistance or thermal properties.
• Organic Synthesis Reagent: Employed in research laboratories for constructing complex molecular architectures, including in cross-coupling reactions and as a nucleophile.
• Ligand & Catalyst Preparation: Utilized in the preparation of chiral ligands and metal-organic catalysts for asymmetric synthesis.
• Dye & Pigment Manufacturing: Acts as an intermediate in the synthesis of certain sulfur-based dyes and functional colorants.

Basic Information

Item	Details
Product Name	3,4-Dimethyl-Benzenesulfinic Acid
CAS No.	42187-27-9
Molecular Formula	C8H10O2S
Molecular Weight	170.23 g/mol
Synonyms	3,4-Dimethylbenzenesulfinic Acid; 3,4-Xylenesulfinic Acid; 1,2-Dimethyl-4-sulfinylbenzene; 4-Sulfinyl-o-xylene; Benzenesulfinic acid, 3,4-dimethyl-; 3,4-Dimethylphenylsulfinic Acid
EINECS	Contact for details

Quality Control

Our 3,4-Dimethyl-Benzenesulfinic Acid is manufactured under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR spectroscopy, to ensure it meets the stringent requirements of our industrial and research clients. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its nature as an easily oxidized compound, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

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.