Description

3,5-Diiodoyridine-4-Sulfonic Acid is a high-purity, multi-functional iodinated heterocyclic building block. This compound is valued for its unique molecular structure, which serves as a critical intermediate in the synthesis of complex active pharmaceutical ingredients (APIs) and advanced materials. It is primarily sought after by research and development teams, as well as production chemists, in the pharmaceutical, agrochemical, and specialty chemical industries for creating novel compounds with targeted properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly in antiviral, anticancer, and diagnostic agent research.
• Agrochemical Synthesis: Used in the development of new-generation pesticides and herbicides, leveraging its halogenated pyridine core.
• Ligand and Catalyst Development: Serves as a functionalized building block for creating specialized ligands used in transition metal catalysis.
• Material Science Research: Employed in the development of organic electronic materials and metal-organic frameworks (MOFs) due to its sulfonic acid and iodine functional groups.
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying biological processes and enzyme inhibition.
• Custom Synthesis and Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for bespoke chemical synthesis projects.

Basic Information

Product Name	3,5-Diiodoyridine-4-Sulfonic Acid
CAS No.	871875-87-5
Molecular Formula	C5H3I2NO3S
Molecular Weight	426.96 g/mol
Synonyms	4-Pyridinesulfonic acid, 3,5-diiodo-; 3,5-Diiodopyridine-4-sulfonic Acid; 3,5-Diiodo-4-pyridinesulfonic Acid; DIYPSA; 3,5-Diiodo-4-sulfopyridine; 4-Sulfo-3,5-diiodopyridine; 3,5-Diiodopyridine-4-sulphonic Acid (British spelling)
EINECS	Contact for details

Quality Control

Every batch of 3,5-Diiodoyridine-4-Sulfonic Acid is manufactured under a strict quality management system. We provide comprehensive analytical data to ensure the material meets the high standards required for research and commercial synthesis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is supplied with each shipment. Our quality protocols are designed to support applications requiring GMP-grade intermediates and ensure consistency for scale-up processes.

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 sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%

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