Description

1H-Benzimidazole-5-Sulfonicacid(9Ci) is a specialized sulfonated benzimidazole derivative, a key heterocyclic building block in advanced organic synthesis. This compound matters for its role as a versatile precursor in the development of pharmaceuticals, agrochemicals, and functional materials, where the sulfonic acid group introduces critical solubility and reactivity. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, fine chemical, and dyestuff industries for creating novel active compounds and intermediates.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel drug candidates, particularly those targeting enzyme inhibition or requiring specific solubility profiles.
• Agrochemical Synthesis: Used in the research and development of advanced herbicides, fungicides, and plant growth regulators.
• Dyestuff and Pigment Manufacturing: Acts as a key intermediate for producing specialized azo dyes and high-performance pigments.
• Coordination Chemistry & Ligand Synthesis: Utilized to create complexing agents and ligands for metal catalysis and extraction processes.
• Polymer Modification: Employed to introduce sulfonic acid functionality into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.
• Research & Development: A valuable tool for academic and industrial researchers exploring new heterocyclic chemistry and sulfonation reactions.

Basic Information

Product Name	1H-Benzimidazole-5-Sulfonicacid(9Ci)
CAS No.	27503-78-2
Molecular Formula	C7H6N2O3S
Molecular Weight	198.20 g/mol
Synonyms	5-Sulfobenzimidazole; Benzimidazole-5-sulfonic Acid; 1H-Benzimidazole-5-sulfonic Acid; 5-Benzimidazolesulfonic Acid; 2,3-Dihydro-3-oxobenzimidazole-5-sulfonic Acid (tautomer); 27503-78-2; 1H-1,3-Benzodiazole-5-sulfonic acid
EINECS	Contact for details

Quality Control

Our 1H-Benzimidazole-5-Sulfonicacid(9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its nature as a strong acid/organic solvent, keep away from incompatible materials such as strong bases, oxidizing agents, and reactive metals. The container must be kept tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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