5-Bromo-3-iodo-7-azaindole
5-Bromo-3-iodo-7-azaindole (CAS: 757978-18-0) is a halogenated heterocyclic building block with the molecular formula C7H4BrIN2 and a molecular weight of 322.93 g/mol. This compound serves as a valuable intermediate in organic synthesis, particularly for the development of novel pharmaceutical agents and advanced materials. Its distinct structural features, incorporating both bromine and iodine on the azaindole core, allow for diverse chemical transformations.
- IUPAC
- 5-Bromo-3-iodo-1H-pyrrolo[2,3-b]pyridine

Organic Synthesis Intermediate
5-Bromo-3-iodo-7-azaindole is primarily utilised as a key intermediate in complex organic syntheses. The presence of two different halogens offers regioselective functionalization opportunities, enabling the construction of elaborate molecular architectures.
Pharmaceutical Research and Development
This azaindole derivative is employed in medicinal chemistry programmes aiming to discover new therapeutic compounds. Its scaffold is relevant for exploring novel drug candidates targeting various biological pathways.
Materials Science
The unique electronic and structural properties of halogenated azaindoles make them potential candidates for incorporation into functional materials. Research may involve their use in areas such as organic electronics or optoelectronic devices.
| Molecular weight | 322.93 |
|---|---|
| Empirical formula | C7H4BrIN2 |
| Assay | 97% |
| Melting point | 234-239 °C |


Hazard statements
- H302Harmful 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
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41 |
| Safety statements (S) | 26-39 |
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 5-Bromo-3-iodo-7-azaindole used for?
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5-Bromo-3-iodo-7-azaindole is primarily used as a key intermediate in organic synthesis, particularly in pharmaceutical research and development for creating novel drug candidates and in materials science.
What are the CAS number and chemical formula for 5-Bromo-3-iodo-7-azaindole?
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The CAS number for 5-Bromo-3-iodo-7-azaindole is 757978-18-0, and its empirical formula is C7H4BrIN2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Bromo-3-iodo-7-azaindole with a purity of 97%. This product is intended for research and chemical synthesis purposes and is not supplied as USP, BP, EP, or any other pharmacopoeia grade.
How should 5-Bromo-3-iodo-7-azaindole be handled?
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5-Bromo-3-iodo-7-azaindole is classified as dangerous. It is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye damage (H318), and may cause respiratory irritation (H335). Always handle with appropriate personal protective equipment, including a dust mask (N95), eyeshields, face shield, and gloves, in a well-ventilated area. Avoid breathing dust.
Is this chemical available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 5-Bromo-3-iodo-7-azaindole, serving customers worldwide.
How can I request a quote or sample?
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To request a quote or sample of 5-Bromo-3-iodo-7-azaindole, please contact our sales department through the website or by calling our dedicated customer service line.
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