Indole
Indole (CAS: 120-72-9), with the molecular formula C8H7N and a molecular weight of 117.15 g/mol, is a heterocyclic aromatic organic compound. It occurs naturally in sources such as Citrus aurantium and is a key component in cell biology and chemical synthesis. Indole serves as a fundamental building block for various complex molecules, finding utility in research and development.
- IUPAC
- 1H-Benzo[b]pyrrole

Chemical Synthesis
Indole is a versatile building block in organic synthesis, particularly for the creation of more complex heterocyclic structures. Its reactivity allows for diverse functionalization, making it a valuable starting material for pharmaceuticals and fine chemicals.
Cell Biology Research
As a naturally occurring compound, indole and its derivatives are subjects of study in cell biology. It plays a role in understanding various biological processes and pathways.
Phytochemical Analysis
Indole is identified as a phytochemical present in certain plants, such as Citrus aurantium. Its presence is relevant in the study of plant-derived compounds and their properties.
Building Block for Heterocycles
The indole core is a privileged structure in medicinal chemistry, serving as a foundation for numerous drug candidates and biologically active molecules. It is essential for synthesizing indole-containing compounds.
| Molecular weight | 117.15 |
|---|---|
| Empirical formula | C8H7N |
| Assay | 98% |
| Grade | puriss. |
| Boiling point | 253-254 °C(lit.) |
| Melting point | 51-54 °C(lit.) |



Hazard statements
- H302Harmful if swallowed
- H311Toxic in contact with skin
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
- H400Very toxic to aquatic life
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P312Call a POISON CENTER if you feel unwell
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | 121 °C / 249.8 °F |
| Transport (UN / ADR) | UN 2811 6.1/PG 3 |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 21/22-37/38-41-50/53 |
| Safety statements (S) | 26-36/37/39-60-61 |
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 Indole (CAS 120-72-9) primarily used for?
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Indole (CAS: 120-72-9) is primarily used as a building block in chemical synthesis, particularly for creating complex heterocyclic compounds, and in cell biology and phytochemical research.
What are the CAS number and formula for Indole?
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The CAS number for Indole is 120-72-9, and its molecular formula is C8H7N.
What grade and purity does Tech Serve Solutions supply for Indole?
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Tech Serve Solutions supplies Indole with an assay of 98% and a 'puriss.' grade. We do not represent this product as USP, BP, or EP grade.
How should Indole be handled safely?
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Indole is classified as Dangerous. It is harmful if swallowed, causes skin irritation, serious eye damage, and may cause respiratory irritation. Handle with appropriate personal protective equipment, including a dust mask (type N95), eyeshields, face shield, and gloves, in a well-ventilated area.
Is Indole a controlled substance?
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The provided data does not indicate that Indole (CAS: 120-72-9) is a controlled substance. However, regulations can vary by jurisdiction.
How is Indole packed, shipped, and exported by TSS?
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Tech Serve Solutions exports and supplies chemicals globally. Specific packing and shipping details for Indole will be provided upon inquiry, adhering to all relevant international transport regulations.
How can I request a quote or sample for Indole?
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To request a quote or sample for Indole, please contact our sales department through the website or by phone, providing your specific requirements.
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