2,3,3-Trimethylindolenine
2,3,3-Trimethylindolenine (CAS: 1640-39-7) is a chemical compound with the molecular formula C11H13N and a molecular weight of 159.23 g/mol. This indole derivative serves as a valuable building block in organic synthesis. Its structure makes it useful in the creation of more complex molecules, particularly within the fields of heterocyclic chemistry and the development of novel chemical entities.
- IUPAC
- 2,3,3-Trimethyl-3H-indole
- Synonyms
- 1640-39-72,3,3-Trimethyl-3H-indole

Organic Synthesis Intermediate
2,3,3-Trimethylindolenine is employed as a key intermediate in multi-step organic syntheses. It is particularly useful for constructing indole-containing molecules and other heterocyclic systems.
Heterocyclic Chemistry
As a substituted indolenine, this compound is valuable in the study and synthesis of heterocyclic compounds. It can be a precursor to various functionalised indole derivatives.
Research and Development
This chemical finds application in research laboratories for exploring new synthetic pathways and developing novel materials or compounds with potential biological activity.
| Molecular weight | 159.23 |
|---|---|
| Empirical formula | C11H13N |
| Assay | 98% |
| Boiling point | 228-229 °C/744 mmHg(lit.) |
| Density | 0.992 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.549(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 | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 93 °C / 199.4 °F |
| Transport (UN / ADR) | NA 1993 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| 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 2,3,3-Trimethylindolenine used for?
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2,3,3-Trimethylindolenine is primarily used as an intermediate in organic synthesis and in heterocyclic chemistry research for the construction of indole derivatives and other complex molecules.
What are the CAS number and formula for 2,3,3-Trimethylindolenine?
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The CAS number for 2,3,3-Trimethylindolenine is 1640-39-7 and its empirical formula is C11H13N.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,3,3-Trimethylindolenine with a minimum assay of 98%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 2,3,3-Trimethylindolenine be handled safely?
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Handle 2,3,3-Trimethylindolenine with appropriate personal protective equipment, including eyeshields and gloves. Ensure adequate ventilation, and use a suitable respirator cartridge. It is classified as a Warning substance, causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335).
How is 2,3,3-Trimethylindolenine exported and shipped?
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Tech Serve Solutions is a global supplier and exporter of chemicals, including 2,3,3-Trimethylindolenine, adhering to international shipping regulations (e.g., NA 1993 / PGIII).
How can I request a quote or sample for 2,3,3-Trimethylindolenine?
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To request a quote or sample of 2,3,3-Trimethylindolenine, please contact our sales team through the website or by phone, referencing the product name and CAS number.
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