5-Chloro-7-iodoindole
5-Chloro-7-iodoindole (CAS: 1262770-19-3) is a halogenated heterocyclic compound with the molecular formula C8H5ClIN and a molecular weight of 277.49 g/mol. This indole derivative serves as a valuable building block in organic synthesis. Its structure, featuring both chlorine and iodine substituents on the indole core, makes it a versatile intermediate for constructing more complex molecules, particularly within pharmaceutical research and development.

Organic Synthesis Intermediate
5-Chloro-7-iodoindole acts as a key intermediate in multi-step organic syntheses. The presence of two distinct halogen atoms allows for selective functionalisation through various cross-coupling reactions or nucleophilic substitutions.
Pharmaceutical Research
This compound is utilised in the development of novel pharmaceutical agents. Its indole scaffold is a common motif in many biologically active molecules, and the halogen substituents provide handles for introducing diverse chemical functionalities.
Material Science
As a functionalised heterocycle, 5-Chloro-7-iodoindole can be explored as a building block for advanced materials. Its electronic properties might be modulated through further chemical transformations for applications in organic electronics.
| Molecular weight | 277.49 |
|---|---|
| Empirical formula | C8H5ClIN |
| Assay | 96% |
| Storage temperature | 2-8°C |
| Melting point | 77-82 °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
| 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-Chloro-7-iodoindole used for?
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5-Chloro-7-iodoindole is primarily used as a building block in organic synthesis, particularly for the development of pharmaceutical agents and potentially in material science applications.
What is the CAS number and formula for 5-Chloro-7-iodoindole?
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The CAS number for 5-Chloro-7-iodoindole is 1262770-19-3, and its empirical formula is C8H5ClIN.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Chloro-7-iodoindole with a minimum assay of 96%. This product is not specified as USP, BP, EP, or any other pharmacopoeia grade and should be considered for research or technical use only.
What are the safety considerations when handling 5-Chloro-7-iodoindole?
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5-Chloro-7-iodoindole is labelled with Danger. 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 eye protection and gloves, and ensure adequate ventilation. Refer to the Safety Data Sheet (SDS) for full details.
How is 5-Chloro-7-iodoindole packaged and shipped?
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5-Chloro-7-iodoindole is typically stored at 2-8°C. Shipping and export procedures adhere to all relevant regulations for chemical substances.
How can I request a sample or quote for 5-Chloro-7-iodoindole?
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To request a sample or a quotation, please contact our sales team through the website or direct email, providing your contact details and the quantity required.
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