2,3-Dimethylindole
2,3-Dimethylindole (CAS: 91-55-4) is a heterocyclic organic compound with the molecular formula C10H11N and a molecular weight of 145.20 g/mol. This indole derivative serves as a valuable building block in chemical synthesis, particularly within the realm of heterocyclic chemistry. Its known applications include research into oxidation mechanisms and its behaviour in mass spectrometry analysis.
- IUPAC
- NSC 24936
- Synonyms
- C10H11N2,3-Dimethyl-1H-indole

Oxidation Mechanism Studies
2,3-Dimethylindole has been utilised in scientific research to investigate the oxidation mechanisms involving peroxodisulphate and peroxomonosulphate anions, leading to the formation of derivatives like 2-methylindole-2-carbaldehyde.
Mass Spectrometry Analysis
The compound has been employed to study the behaviour of methylindoles within an Agilent multimode ion source using atmospheric pressure chemical ionization mass spectrometry (APCI-MS).
Heterocyclic Building Block
As a functionalised indole, 2,3-Dimethylindole is a key intermediate for synthesising more complex heterocyclic structures in organic chemistry research and development.
| Molecular weight | 145.20 |
|---|---|
| Empirical formula | C10H11N |
| Assay | ≥97% |
| Boiling point | 285 °C(lit.) |
| Application | 2,3-Dimethylindole has been used to study the mechanism of oxidation of 2,3-dimethylindole by peroxodisulphate and peroxomonosulphate anions to 2-methylindole-2-carbaldehyde1. It has been used to study the behaviour of methylindoles in the agilent multimode ion source by atmospheric pressure chemical ionization mass spectrometry2. |
| Melting point | 105-107 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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 2,3-Dimethylindole used for?
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2,3-Dimethylindole is primarily used as a building block in chemical synthesis and has been applied in studies concerning oxidation mechanisms and mass spectrometry analysis.
What is the CAS number and molecular formula for 2,3-Dimethylindole?
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The CAS number is 91-55-4 and the molecular formula is C10H11N.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,3-Dimethylindole with a purity of ≥97%. We do not represent this product as USP, BP or EP grade.
How should 2,3-Dimethylindole be handled safely?
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Handle 2,3-Dimethylindole with appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. Consult the Safety Data Sheet (SDS) for comprehensive safety information.
How is 2,3-Dimethylindole shipped?
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2,3-Dimethylindole is carefully packaged and exported by Tech Serve Solutions in compliance with all relevant shipping regulations for chemical substances.
How can I request a quote or sample of 2,3-Dimethylindole?
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Please contact our sales team via the website or your usual representative to request a quotation or a sample of 2,3-Dimethylindole.
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