3-Hydroxy-4-iodobenzoic acid
3-Hydroxy-4-iodobenzoic acid (CAS: 58123-77-6), with the molecular formula HOC6H3(I)CO2H and a molecular weight of 264.02 g/mol, is a functionalised aromatic compound. It serves as a valuable building block in organic synthesis, particularly in the development of pharmaceuticals and complex organic molecules. Its structure features a carboxylic acid group, a hydroxyl group, and an iodine atom on a benzene ring, offering multiple sites for chemical modification.

Organic Synthesis Intermediate
3-Hydroxy-4-iodobenzoic acid is employed as a key intermediate in the synthesis of more complex organic compounds. The presence of the iodine atom allows for various coupling reactions, such as Suzuki or Sonogashira couplings, enabling the introduction of diverse substituents.
Pharmaceutical Research
This compound finds application in medicinal chemistry for the development of novel drug candidates. Its specific structural features can be incorporated into molecules designed to interact with biological targets.
Material Science
The unique combination of functional groups can be exploited in the synthesis of specialised polymers or organic materials with tailored electronic or optical properties.
| Molecular weight | 264.02 |
|---|---|
| Linear formula | HOC6H3(I)CO2H |
| Assay | 97% |
| Melting point | 225-229 °C |


Hazard statements
- H301Toxic if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-37/38-41 |
| Safety statements (S) | 26-36/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 3-Hydroxy-4-iodobenzoic acid used for?
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3-Hydroxy-4-iodobenzoic acid is primarily used as a building block in organic synthesis and in pharmaceutical research for the development of new drug candidates and complex organic molecules.
What is the CAS number and chemical formula for 3-Hydroxy-4-iodobenzoic acid?
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The CAS number for 3-Hydroxy-4-iodobenzoic acid is 58123-77-6, and its chemical formula is HOC6H3(I)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Hydroxy-4-iodobenzoic acid with an assay of 97%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
What are the primary safety hazards associated with 3-Hydroxy-4-iodobenzoic acid?
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3-Hydroxy-4-iodobenzoic acid is classified as Dangerous. It is harmful if swallowed (H301), causes skin irritation (H315), causes serious eye damage (H318), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields, face shields, gloves, and suitable respirator cartridges, must be used.
How is 3-Hydroxy-4-iodobenzoic acid shipped and exported?
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3-Hydroxy-4-iodobenzoic acid is shipped and exported according to regulations for hazardous materials, including UN 2811, Class 6.1, Packing Group III.
How can I request a sample or quote for 3-Hydroxy-4-iodobenzoic acid?
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To request a sample or a quote for 3-Hydroxy-4-iodobenzoic acid, please contact our sales team through the website or by phone, providing your specific requirements.
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