2-Hydroxy-4-iodobenzoic acid
2-Hydroxy-4-iodobenzoic acid (CAS: 16870-28-3), with the molecular formula C7H5IO3, is a crucial organic building block. This compound, also known as 4-iodosalicylic acid, functions as a versatile intermediate in chemical synthesis. Its structure, featuring both hydroxyl and carboxylic acid groups along with an iodine substituent, enables a range of chemical transformations, making it valuable in the development of complex organic molecules for research and industrial applications.
- IUPAC
- 4-Iodosalicylic acid
- Synonyms
- 4-Iodosalicylic acid

Organic Synthesis Intermediate
2-Hydroxy-4-iodobenzoic acid serves as a key building block in multi-step organic syntheses. Its functional groups allow for diverse reactions, including esterification, amidation, and coupling reactions, facilitating the construction of more complex molecular architectures.
Pharmaceutical Research
This compound is utilised in the research and development of novel pharmaceutical agents. The iodine atom can be a site for further functionalisation or participate in cross-coupling reactions, enabling the synthesis of potential drug candidates.
Material Science
In material science, 2-Hydroxy-4-iodobenzoic acid can be incorporated into polymers or used in the synthesis of specialised organic materials. Its unique structural features may impart desirable properties to the resulting materials.
| Molecular weight | 264.02 |
|---|---|
| Empirical formula | C7H5IO3 |
| Assay | 97% |
| Melting point | 229-234 °C |


Hazard statements
- H301Toxic if swallowed
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-41 |
| Safety statements (S) | 26-39-45 |
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 2-Hydroxy-4-iodobenzoic acid used for?
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2-Hydroxy-4-iodobenzoic acid is primarily used as a versatile building block and intermediate in organic synthesis, particularly in pharmaceutical research and material science for creating complex organic molecules.
What is the CAS number and molecular formula for 2-Hydroxy-4-iodobenzoic acid?
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The CAS number for 2-Hydroxy-4-iodobenzoic acid is 16870-28-3, and its molecular formula is C7H5IO3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Hydroxy-4-iodobenzoic acid with a minimum assay of 97%. This product is typically supplied as a research or technical grade chemical and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling precautions for 2-Hydroxy-4-iodobenzoic acid?
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2-Hydroxy-4-iodobenzoic acid is classified as Dangerous (Danger) with hazards including severe eye damage (H318) and toxicity if swallowed (H301). Appropriate personal protective equipment, including eye protection and protective clothing, must be worn. Handle in a well-ventilated area and follow emergency procedures as indicated by the safety data sheet.
How is 2-Hydroxy-4-iodobenzoic acid packed, shipped, and exported?
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2-Hydroxy-4-iodobenzoic acid is carefully packed in compliance with international shipping regulations for hazardous materials. It is exported globally by Tech Serve Solutions, a registered exporter of chemicals.
How can I request a sample or quote for 2-Hydroxy-4-iodobenzoic acid?
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To request a sample or a quote for 2-Hydroxy-4-iodobenzoic acid, please contact the Tech Serve Solutions sales team through our website or by direct enquiry, providing your specific requirements.
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