Description

4-Quinolinesulfonic Acid is a versatile organic sulfonic acid derivative of the quinoline heterocycle, serving as a key building block and intermediate in advanced chemical synthesis. Its value lies in its ability to introduce both the quinoline moiety and a sulfonic acid functional group, enabling the creation of compounds with tailored properties for specialized applications. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of various quinoline-based drug candidates, including potential antimicrobial and antimalarial agents.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators that leverage the biological activity of the quinoline structure.
• Dye and Pigment Manufacturing: Serves as a starting material for synthesizing sulfonated quinoline dyes, which offer bright colors and good solubility.
• Corrosion Inhibitor Formulation: Incorporated into specialty chemical blends designed to protect metals in industrial processes due to its heterocyclic structure.
• Research & Development: Employed in academic and industrial R&D labs for exploring new chemical entities, metal-organic frameworks (MOFs), and catalytic systems.
• Ligand and Chelating Agent Precursor: The sulfonic acid group allows for the creation of complexing agents used in metal extraction and catalysis.

Basic Information

Product Name	4-Quinolinesulfonic Acid
CAS No.	6046-42-0
Molecular Formula	C9H7NO3S
Molecular Weight	209.22 g/mol
Synonyms	Quinoline-4-sulfonic acid; 4-Sulfoquinoline; 4-Quinolinesulphonic acid; 4-Quinoline sulfonic acid; 4-Quinolylsulfonic acid; NSC 403697; 1-Azanaphthalene-4-sulfonic acid
EINECS	227-933-8

Quality Control

Our 4-Quinolinesulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for research and industrial synthesis. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. For customers with specific regulatory needs, we can discuss compliance with relevant frameworks.

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 incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 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.