Description

3,5-Diiodo-4-Hydroxybenzoic Acid is a halogenated aromatic compound that serves as a versatile synthetic intermediate in advanced organic chemistry. Its unique structure, featuring two iodine atoms and a carboxylic acid group, makes it a critical building block for creating complex molecules with specific electronic and steric properties. This high-purity chemical is essential for researchers and manufacturers in the pharmaceutical and agrochemical sectors developing new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of thyroid hormone analogs, X-ray contrast media, and other iodinated bioactive compounds.
• Agrochemical Synthesis: Used in the development of novel herbicides and fungicides, where the iodine atoms can enhance biological activity and environmental stability.
• Ligand and Catalyst Development: Serves as a starting material for creating specialized ligands used in transition metal catalysis and coordination chemistry.
• Material Science Research: Employed in the synthesis of organic electronic materials, liquid crystals, and polymers requiring halogenated aromatic units.
• Chemical Biology Probes: Useful for synthesizing molecular probes and tags for imaging and diagnostic applications due to its heavy atom content.
• Custom Synthesis and R&D: A valuable reagent for contract research organizations and academic laboratories engaged in novel heterocyclic and aromatic compound synthesis.

Basic Information

Product Name	3,5-Diiodo-4-Hydroxybenzoic Acid
CAS No.	618-76-8
Molecular Formula	C7H4I2O3
Molecular Weight	389.91 g/mol
Synonyms	4-Hydroxy-3,5-diiodobenzoic Acid; 3,5-Diiodo-4-hydroxybenzoic acid; Benzoic acid, 3,5-diiodo-4-hydroxy-; DIHBA; 3,5-Diiodosalicylic Acid (common misnomer); 618-76-8; NSC 403169
EINECS	210-567-6

Quality Control

Every batch of 3,5-Diiodo-4-Hydroxybenzoic Acid is manufactured under strict quality management systems. We provide material that meets high-purity standards suitable for research and industrial synthesis. Comprehensive analytical testing, including HPLC for purity and identity confirmation, is performed. A Certificate of Analysis (COA) detailing batch-specific results is available for all shipments to ensure traceability and compliance with your project requirements.

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 to prevent absorption of atmospheric moisture, which can affect purity and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Melting Point	255°C - 265°C
Loss on Drying	≤1.0%
Heavy Metals (as Pb)	≤20 ppm
Residue on Ignition	≤0.1%

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