Description

4,6-Dihydroxypyridine-3-Sulfonic Acid is a versatile heterocyclic sulfonic acid derivative that serves as a key synthetic intermediate and functional building block. Its unique structure, featuring both phenolic hydroxyl groups and a sulfonic acid moiety, makes it valuable for introducing water-solubility and metal-chelating properties into more complex molecules. This compound is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for applications ranging from drug development to the synthesis of advanced materials and dyes.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring enhanced solubility or specific metal-binding pharmacophores.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and plant growth regulators where its chelating properties can be utilized.
• Metal Chelation & Catalysis: Acts as a ligand for metal ions, finding use in catalytic systems, wastewater treatment for heavy metal removal, and as a component in analytical reagents.
• Dye & Pigment Manufacturing: Serves as a precursor for the synthesis of water-soluble dyes and functional pigments, leveraging its sulfonic acid group.
• Chemical Research & Development: Employed in academic and industrial R&D for exploring new heterocyclic chemistry, polymer modification, and material science applications.

Basic Information

Product Name	4,6-Dihydroxypyridine-3-Sulfonic Acid
CAS No.	163137-36-8
Molecular Formula	C5H5NO5S
Molecular Weight	191.16 g/mol
Synonyms	3-Pyridinesulfonic acid, 4,6-dihydroxy-; 4,6-Dihydroxy-3-pyridinesulfonic acid; 4,6-Dihydroxypyridine-3-sulphonic acid; 4,6-Dihydroxy-3-sulfopyridine; 3-Sulfo-4,6-dihydroxypyridine; 4,6-Dihydroxypyridine-3-sulfonate
EINECS	Contact for details

Quality Control

Our 4,6-Dihydroxypyridine-3-Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity, IR for identification, and loss on drying, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%

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