Description

Benzenesulfonic Acid, 2,5-Dihydroxy-3-Methoxy- (4Ci) is a functionalized benzenesulfonic acid derivative characterized by its specific substitution pattern of hydroxy and methoxy groups. This compound matters as a versatile chemical intermediate, offering a reactive sulfonic acid group alongside phenolic functionalities, enabling its use in the synthesis of more complex molecules, dyes, and specialty polymers. It is needed by research and development laboratories, fine chemical manufacturers, and industries involved in producing advanced materials, agrochemicals, and pharmaceutical intermediates where precise molecular architecture is critical.

Application

• As a key chemical intermediate in the synthesis of specialty dyes and pigments.
• In the research and development of novel pharmaceutical compounds and active pharmaceutical ingredients (APIs).
• For the production of agrochemicals, including herbicides and plant growth regulators.
• As a building block in the manufacture of advanced polymers and functional materials.
• In organic synthesis laboratories for coupling reactions and to introduce sulfonic acid groups.
• Potential use in the formulation of photoinitiators or light-sensitive compounds.

Basic Information

Product Name	Benzenesulfonic Acid, 2,5-Dihydroxy-3-Methoxy- (4Ci)
CAS No.	675140-68-8
Molecular Formula	C7H8O6S
Molecular Weight	220.20 g/mol
Synonyms	2,5-Dihydroxy-3-methoxybenzenesulfonic acid; 3-Methoxy-2,5-dihydroxybenzenesulfonic acid; 2-Hydroxy-5-methoxy-1,3-benzenedisulfonic acid (related isomer); 4-Hydroxy-2-methoxy-5-sulfobenzoic acid (tautomer); 2,5-Dihydroxyanisole-3-sulfonic acid; 3-Methoxypyrogallol-6-sulfonic acid; Benzenesulfonic acid, 2,5-dihydroxy-3-methoxy-; CAS 675140-68-8
EINECS	Contact for details

Quality Control

Our Benzenesulfonic Acid, 2,5-Dihydroxy-3-Methoxy- (4Ci) is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Due to its acidic nature, containers should be kept tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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