4-Chloroindole
4-Chloroindole (CAS: 25235-85-2), with the molecular formula C8H6ClN, is a halogenated heterocyclic compound. This chemical serves as a valuable building block in organic synthesis, particularly within the pharmaceutical and chemical research sectors. Its structure, featuring an indole ring substituted with chlorine, makes it a useful intermediate for creating more complex molecules. Supplied by Tech Serve Solutions, it is suitable for laboratory and industrial applications.

Organic Synthesis Intermediate
4-Chloroindole is utilised as a key intermediate in the synthesis of diverse organic compounds. Its reactive chlorine atom allows for various substitution reactions, facilitating the construction of complex molecular architectures.
Pharmaceutical Research
This compound serves as a crucial building block in the development of novel pharmaceutical agents. Its indole scaffold is present in many biologically active molecules, making it a target for medicinal chemistry research.
Heterocyclic Chemistry
As a halogenated heterocycle, 4-Chloroindole is an important reagent for chemists exploring new synthetic routes and functionalising indole systems. It contributes to the broader field of heterocyclic building blocks.
| Molecular weight | 151.59 |
|---|---|
| Empirical formula | C8H6ClN |
| Assay | 98% |
| Boiling point | 129-130 °C/4 mmHg(lit.) |
| Density | 1.259 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.628(lit.) |
| Solubility | ethanol: soluble50 mg/mL, clear, colorless |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 4-Chloroindole primarily used for?
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4-Chloroindole is primarily used as a building block in organic synthesis, particularly in the research and development of pharmaceutical agents and other complex organic molecules.
What are the CAS number and molecular formula for 4-Chloroindole?
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The CAS number for 4-Chloroindole is 25235-85-2, and its molecular formula is C8H6ClN.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Chloroindole with an assay of 98%. This product is intended for research and laboratory use and is not represented as USP, BP, EP, or other pharmacopoeial grades.
How should 4-Chloroindole be handled safely?
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4-Chloroindole is classified with Warning signal word and hazards H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, should be worn. Handle in a well-ventilated area.
How is 4-Chloroindole packed and shipped?
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4-Chloroindole is carefully packed to ensure safe transit and is exported globally by Tech Serve Solutions, adhering to all relevant shipping regulations for chemical compounds.
How can I request a quote or sample for 4-Chloroindole?
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To request a quote or a sample of 4-Chloroindole, please contact the Tech Serve Solutions sales team through the website or direct inquiry channels.
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