Description

2-Sulfopyridine-3-Carboxylic Acid is a specialized heterocyclic sulfonic acid derivative that serves as a key synthetic intermediate and building block in advanced organic chemistry. Its unique bifunctional structure, featuring both a carboxylic acid and a sulfonic acid group on the pyridine ring, makes it valuable for creating complex molecules with tailored properties. This compound is primarily utilized by research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for applications ranging from catalyst design to the synthesis of novel active ingredients.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of novel drug candidates, particularly those requiring sulfonated or highly polar motifs to enhance solubility or biological activity.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and plant growth regulators that benefit from its specific heterocyclic structure.
• Ligand and Catalyst Preparation: Serves as a precursor for creating complexing agents, chelating ligands, and organocatalysts used in asymmetric synthesis and metal catalysis.
• Specialty Polymer Modifier: Incorporated into polymer chains to introduce sulfonic acid groups, which can impart properties like ion-exchange capacity, hydrophilicity, or anti-static characteristics.
• Dye and Pigment Chemistry: Acts as an intermediate in the synthesis of specialized dyes and pigments, where the pyridine-sulfonate structure can influence color and fastness properties.
• Chemical Research & Development: Employed in academic and industrial R&D settings for exploring new chemical reactions and constructing molecular libraries for screening.

Basic Information

Product Name	2-Sulfopyridine-3-Carboxylic Acid
CAS No.	6602-51-3
Molecular Formula	C6H5NO5S
Molecular Weight	203.17 g/mol
Synonyms	3-Carboxy-2-pyridinesulfonic Acid; 2-Pyridinesulfonic Acid-3-carboxylic Acid; 3-Pyridinecarboxylic Acid, 2-sulfo-; Pyridine-3-carboxylic Acid-2-sulfonic Acid; 2-Sulfo-3-pyridinecarboxylic Acid; 2-Sulfonicotinic Acid; 3-Carboxypyridine-2-sulfonic Acid
EINECS	Contact for details

Quality Control

Every batch of 2-Sulfopyridine-3-Carboxylic Acid is produced and tested under a strict quality management system to ensure consistency and reliability for your critical applications. We employ advanced analytical techniques, including HPLC, NMR, and titration methods, to verify identity, purity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment, and we support custom purity requirements for research and cGMP manufacturing needs.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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