Description

Quinoline-3-sulfonic acid is a versatile heterocyclic sulfonic acid derivative, serving as a key synthetic intermediate and building block in advanced organic chemistry. Its value lies in its bifunctional nature, combining the aromatic quinoline core with a reactive sulfonic acid group, enabling precise molecular modifications. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates for complex synthesis.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with quinoline-based structures.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and other crop protection agents.
• Dye & Pigment Manufacturing: Acts as a key intermediate for producing sulfonated quinoline dyes and colorants.
• Ligand & Catalyst Development: Serves as a starting material for creating complexing agents and catalytic ligands in metal-organic chemistry.
• Corrosion Inhibitor Formulation: Utilized in the production of specialized corrosion inhibitors for industrial applications.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new chemical entities and reaction pathways.

Basic Information

Product Name	Quinoline-3-sulfonic Acid
CAS No.	6046-41-9
Molecular Formula	C9H7NO3S
Molecular Weight	209.22 g/mol
Synonyms	3-Quinolinesulfonic Acid; Quinoline-3-sulphonic Acid; 3-Sulfoquinoline; 6046-41-9; Quinoline-3-Sulfonic Acid Hydrate (common form); 3-Quinolylsulfonic Acid; NSC 403779
EINECS	227-922-2

Quality Control

Our Quinoline-3-sulfonic acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) with key parameters including assay, impurity profile, and physical characteristics. Our quality commitment supports applications requiring reliable and traceable chemical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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