Description

8-Mercaptoquinoline-5-Sulphonic Acid is a specialized sulfur- and nitrogen-containing heterocyclic compound that serves as a versatile intermediate and analytical reagent. Its unique structure, featuring both a mercapto group and a sulfonic acid moiety, makes it a valuable chelating agent and precursor for synthesizing more complex molecules. This product is primarily utilized by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for applications ranging from metal ion analysis to the development of novel active ingredients.

Application

• Analytical Chemistry: Acts as a sensitive chromogenic reagent for the spectrophotometric determination and complexometric titration of various metal ions, including iron, copper, and cobalt.
• Pharmaceutical Intermediates: Serves as a key building block in the synthesis of novel quinoline-based compounds with potential biological activity.
• Agrochemical Synthesis: Used in the research and development of new crop protection agents and plant growth regulators.
• Coordination Chemistry: Employed as a ligand to form stable complexes with transition metals for catalytic or material science applications.
• Chemical Research: A valuable tool for academic and industrial R&D in organic synthesis and heterocyclic chemistry.
• Dye and Pigment Precursor: Can be utilized in the synthesis of sulfur-containing dyes and functional pigments.

Basic Information

Product Name	8-Mercaptoquinoline-5-Sulphonic Acid
CAS No.	5825-36-5
Molecular Formula	C9H7NO3S2
Molecular Weight	241.29 g/mol
Synonyms	8-Thioquinoline-5-sulfonic acid; 5-Sulfo-8-mercaptoquinoline; 8-Mercaptoquinoline-5-sulfonic acid; Quinolin-8-thiol-5-sulfonic acid; 8-Quinolinethiol-5-sulfonic acid; 5-Sulfo-8-quinolinethiol; Thiooxine-5-sulfonic acid
EINECS	Contact for details

Quality Control

Our 8-Mercaptoquinoline-5-Sulphonic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, impurity profile, and physical characteristics. Our quality commitment aligns with cGMP principles where applicable, ensuring reliability for your critical research and production processes.

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 sensitivity to oxidation, it is recommended to handle under an inert atmosphere for long-term storage of bulk quantities and to minimize headspace in opened containers. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
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.