4-Methoxyindole
4-Methoxyindole (CAS: 4837-90-5; Formula: C9H9NO) is a chemical compound with a molecular weight of 147.17 g/mol. It is primarily used as a building block in chemical synthesis, particularly within the realm of heterocyclic chemistry and indole derivatives. This compound has found application in analytical chemistry, such as in studies comparing complexation reactions involving cyclodextrins and specific pharmaceutical agents.

Chemical Synthesis
4-Methoxyindole serves as a valuable intermediate and building block in organic synthesis, enabling the construction of more complex molecular structures, particularly those featuring indole cores.
Analytical Chemistry
Its use has been documented in comparative analytical studies, for instance, in investigating the complexation behaviour of cyclodextrins with drug molecules using chromatographic techniques.
Heterocyclic Chemistry
As an indole derivative, 4-Methoxyindole is a key component in the synthesis of various heterocyclic compounds, which are important scaffolds in medicinal chemistry and materials science.
| Molecular weight | 147.17 |
|---|---|
| Empirical formula | C9H9NO |
| Assay | 99% |
| Boiling point | 181-183 °C/24 mmHg(lit.) |
| Solubility | ethanol: soluble50 mg/mL, clear, faintly yellow |
| Application | 4-Methoxyindole was used for comparing the complexation reaction of β-cyclodextrin (β-CD) with pindolol using reversed-phase liquid chromatography1. |
| Melting point | 69-70 °C(lit.) |

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 | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| 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-Methoxyindole used for?
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4-Methoxyindole is primarily used as a building block in chemical synthesis, particularly for creating heterocyclic compounds and indole derivatives. It has also been employed in analytical chemistry for comparative studies of complexation reactions.
What are the CAS number and formula for 4-Methoxyindole?
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The CAS number for 4-Methoxyindole is 4837-90-5, and its empirical formula (Hill notation) is C9H9NO.
What grade and purity does Tech Serve Solutions supply for 4-Methoxyindole?
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Tech Serve Solutions supplies 4-Methoxyindole with a purity of 99% (Assay). This is a technical/research grade material; TSS does not represent it as USP, BP, or EP.
How should 4-Methoxyindole be handled safely?
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4-Methoxyindole is classified as a Warning. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment includes a dust mask (type N95), eyeshields, and gloves. Ensure good ventilation and avoid breathing dust.
Is 4-Methoxyindole a controlled substance?
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The provided safety data does not indicate that 4-Methoxyindole is a controlled substance.
How is 4-Methoxyindole packed, shipped, and exported?
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4-Methoxyindole is carefully packaged to ensure its integrity during transit. As a global supplier, Tech Serve Solutions exports chemicals worldwide, adhering to all relevant shipping regulations.
How can I request a sample or quote for 4-Methoxyindole?
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To request a sample or obtain a quotation for 4-Methoxyindole, please contact our sales team via the website or direct inquiry, providing your specific requirements.
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