Description

5-Sulfonicotinic Acid is a versatile heterocyclic building block and intermediate of significant commercial importance. Its unique structure, featuring both a carboxylic acid and a sulfonic acid group on a pyridine ring, makes it a valuable precursor for synthesizing complex molecules. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop advanced active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a functionalized nicotinic acid core.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Ligand and Chelating Agent Precursor: Serves as a starting material for creating specialized ligands used in catalysis and metal ion sequestration.
• Dye and Pigment Manufacturing: Intermediate in the synthesis of water-soluble dyes and high-performance pigments.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity and ion-exchange capacity.
• Research & Development: A valuable reagent in organic synthesis and medicinal chemistry research for exploring new chemical entities.

Basic Information

Product Name	5-Sulfonicotinic Acid
CAS No.	4833-92-5
Molecular Formula	C6H5NO5S
Molecular Weight	203.17 g/mol
Synonyms	5-Sulfopyridine-3-carboxylic acid; 3-Carboxy-5-pyridinesulfonic acid; 3-Pyridinesulfonic acid, 5-carboxy-; 5-Carboxypyridine-3-sulfonic acid; Nicotinic acid, 5-sulfo-; Pyridine-5-sulfonic acid-3-carboxylic acid
EINECS	225-417-2

Quality Control

Our 5-Sulfonicotinic Acid is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high-purity standards required for sensitive synthesis applications. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with each 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 place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

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.