Description

2-Methoxy-Benzenesulfonic Acid is a versatile aromatic sulfonic acid derivative characterized by its methoxy substituent. This compound serves as a valuable building block and intermediate in advanced organic synthesis, particularly for introducing the sulfonic acid moiety into target molecules. It is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty chemical sectors seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), especially for compounds requiring sulfonate groups for solubility or biological activity.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents where the benzenesulfonic acid structure is a core component.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated azo dyes and other colorants, providing water-solubility and ionic character.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, which can be used to create ion-exchange resins or materials with specific catalytic properties.
• Chemical Research & Development: Serves as a standard reagent and model compound in organic chemistry research for studying electrophilic aromatic substitution and other reactions.
• Catalyst and Ligand Preparation: Can be used to synthesize metal-complexing ligands or organocatalysts based on the sulfonic acid functionality.

Basic Information

Product Name	2-Methoxy-Benzenesulfonic Acid
CAS No.	34256-00-3
Molecular Formula	C7H8O4S
Molecular Weight	188.20 g/mol
Synonyms	o-Methoxybenzenesulfonic Acid; 2-Methoxybenzenesulfonic Acid; (2-Methoxyphenyl)sulfonic Acid; o-Anisolesulfonic Acid; 2-Methoxy-1-benzenesulfonic Acid; 1-Methoxy-2-sulfobenzene; Benzenesulfonic acid, 2-methoxy-
EINECS	Contact for details

Quality Control

Our 2-Methoxy-Benzenesulfonic Acid is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay and impurity profiles. Our quality commitment ensures the material meets the high standards required for synthetic and industrial applications.

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 product is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%

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