Description

3-Pyridinesulfonic Acid is a versatile heterocyclic sulfonic acid derivative, serving as a critical building block in advanced organic synthesis. Its value lies in its dual functionality, providing both a pyridine ring for coordination and a sulfonic acid group for solubility and acidity, which is essential for creating complex molecular architectures. This compound is particularly needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting the central nervous system.
• Agrochemical Synthesis: Used in the development of advanced herbicides, pesticides, and plant growth regulators.
• Ligand and Catalyst Preparation: Serves as a starting material for creating water-soluble ligands and organocatalysts used in metal-catalyzed reactions.
• Corrosion Inhibitor Formulation: An active component in specialty chemical formulations designed to protect metal surfaces in industrial processes.
• Dye and Pigment Manufacturing: Intermediate in the production of sulfonated azo dyes and other colorants requiring enhanced water solubility.
• Polymer Modification: Incorporated into polymer chains to impart ionic character, acidity, or improved hydrophilicity to materials.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic methodologies and chemical properties.

Basic Information

Product Name	3-Pyridinesulfonic Acid
CAS No.	636-73-7
Molecular Formula	C5H5NO3S
Molecular Weight	159.16 g/mol
Synonyms	Pyridine-3-sulfonic Acid; 3-Pyridylsulfonic Acid; 3-Sulfopyridine; Nicotinic Acid Sulfonic Acid Derivative; β-Pyridinesulfonic Acid; 3-PSA; 3-Pyridinesulphonic Acid; Pyridine-m-sulfonic Acid
EINECS	211-274-5

Quality Control

Our 3-Pyridinesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

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	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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