Description

6-Hydroxy-3-Pyridinesulphonic Acid is a versatile organic intermediate featuring both a phenolic hydroxyl group and a sulfonic acid moiety on a pyridine ring. This unique bifunctional structure makes it a valuable building block for the synthesis of complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is primarily sought after by research and development chemists, process engineers, and manufacturers in fine chemical synthesis.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially for drugs targeting the central nervous system or possessing specific receptor binding profiles.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators, leveraging its heterocyclic core for biological activity.
• Ligand and Chelating Agent: Serves as a starting material for creating specialized ligands used in catalysis and metal ion complexation processes.
• Dye and Pigment Manufacturing: Acts as an intermediate in the production of certain azo dyes and other colorants due to its reactive sites.
• Research & Development: Employed in academic and industrial R&D for exploring new chemical entities and reaction pathways in medicinal and synthetic chemistry.
• Corrosion Inhibitor Formulation: Potential use as a component in specialty chemical formulations designed to prevent metal corrosion.

Basic Information

Product Name	6-Hydroxy-3-Pyridinesulphonic Acid
CAS No.	6684-46-4
Molecular Formula	C5H5NO4S
Molecular Weight	175.16 g/mol
Synonyms	3-Pyridinesulfonic acid, 6-hydroxy-; 6-Hydroxynicotinic-3-sulfonic acid; 6-Hydroxy-3-pyridylsulfonic acid; 6-Hydroxypyridine-3-sulfonic acid; 3-Sulfo-6-hydroxypyridine; 6-Hydroxynicotinic acid sulfonic acid; 2-Hydroxy-5-sulfopyridine (tautomeric form); 5-Hydroxy-2-pyridinesulfonic acid
EINECS	Contact for details

Quality Control

Our 6-Hydroxy-3-Pyridinesulphonic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request, providing full traceability and quality assurance for your processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

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.