Description

4-Methyl-1H-Benzimidazole-2-Sulfonic Acid is a high-purity, functionalized benzimidazole derivative that serves as a critical building block in advanced organic synthesis. Its value lies in the unique sulfonic acid moiety attached to the benzimidazole core, which imparts water solubility and acidity, enabling its use in creating specialized dyes, pharmaceutical intermediates, and performance chemicals. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries who require a reliable source of this specific sulfonated heterocycle for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of novel drug candidates, particularly those targeting specific enzyme inhibitors or requiring enhanced solubility profiles.
• Agrochemical Synthesis: Used in the development of advanced fungicides, herbicides, and plant growth regulators where the benzimidazole scaffold is active.
• Dye and Pigment Manufacturing: Functions as a precursor for sulfonated azo dyes and other colorants, providing improved water solubility and fiber affinity.
• Ligand and Catalyst Preparation: The sulfonic acid group allows for the creation of water-soluble ligands for metal catalysis and coordination chemistry.
• Corrosion Inhibitor Formulation: Incorporated into specialty chemical blends designed to protect metals in acidic or aqueous environments.
• Research & Development: Serves as a standard or building block in academic and industrial R&D for exploring new chemical entities and material properties.

Basic Information

Product Name	4-Methyl-1H-Benzimidazole-2-Sulfonic Acid
CAS No.	1071368-98-3
Molecular Formula	C8H8N2O3S
Molecular Weight	212.23 g/mol
Synonyms	4-Methyl-1H-benzimidazole-2-sulfonic acid; 2-Sulfo-4-methylbenzimidazole; 4-Methyl-2-benzimidazolesulfonic acid; 4-Methylbenzimidazole-2-sulfonic acid; 1H-Benzimidazole-2-sulfonic acid, 4-methyl-; 4-Methyl-1H-benzo[d]imidazole-2-sulfonic acid
EINECS	Contact for details

Quality Control

Our 4-Methyl-1H-Benzimidazole-2-Sulfonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability, consistency, and compliance.

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 handled in a dry environment to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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