Description

4-Hydroxy-3,5-Diiodobenzenesulphonic Acid is a specialized iodinated aromatic sulfonic acid derivative that serves as a critical synthetic intermediate and reagent. Its unique structure, featuring both sulfonic acid and phenolic hydroxyl groups with iodine substituents, makes it valuable for introducing iodine atoms and modifying solubility profiles in target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and fine chemical sectors who require high-purity building blocks for advanced synthesis.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of iodinated contrast agents, thyroid hormone analogs, and other active pharmaceutical ingredients (APIs).
• Chemical Synthesis Reagent: Used as a versatile reagent for introducing iodine and sulfonate functional groups into complex organic molecules.
• Research & Development: Employed in academic and industrial R&D for exploring new chemical entities, particularly in medicinal chemistry and material science.
• Dye and Pigment Manufacturing: Acts as a precursor or intermediate in the production of specialized dyes and pigments requiring halogenated structures.
• Analytical Chemistry: Can be used as a standard or derivatization agent in chromatographic and spectroscopic analysis.

Basic Information

Product Name	4-Hydroxy-3,5-Diiodobenzenesulphonic Acid
CAS No.	554-71-2
Molecular Formula	C6H4I2O4S
Molecular Weight	421.97 g/mol
Synonyms	3,5-Diiodo-4-hydroxybenzenesulfonic Acid; 4-Hydroxy-3,5-diiodobenzenesulfonic Acid; Benzenesulfonic acid, 3,5-diiodo-4-hydroxy-; 3,5-Diiodo-4-hydroxybenzene-1-sulfonic acid; 3,5-Diiodophenol-4-sulfonic acid; 4-Hydroxy-3,5-diiodophenylsulfonic acid; DIHBSA
EINECS	209-073-4

Quality Control

Our 4-Hydroxy-3,5-Diiodobenzenesulphonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, impurity profile, and residual solvents. Our quality commitment supports applications requiring high-purity intermediates for pharmaceutical and research use.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible materials. Due to its nature as a strong acid/organic solvent, handle with appropriate personal protective equipment.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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