1,3-Dimethyl-1H-indole TCI D6021

Chemical Identity

Other names: 1,3-Dimethylindole
CAS No.: 875-30-9
PubChem: CID 70130
Formula: C10H11N
Molecular weight: 145.21 g/mol
Purity: >98.0%(GC)
Reference databases: ChemSpider·ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 1,3-dimethylindole
SMILES: CC1=CN(C2=CC=CC=C12)C
InChIKey: NAPPMSNSLWACIV-UHFFFAOYSA-N
MDL: MDL00030239

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TCI D6021 1,3-Dimethyl-1H-indole is an indole derivative bearing methyl substituents at two defined positions: on the nitrogen atom (position 1) and on position 3 of the pyrrole ring. The compound belongs to the heterocyclic building block family — starting materials that chemists use to assemble more complex molecules without having to construct the indole framework from scratch. In organic synthesis laboratories, the indole scaffold appears very frequently in alkaloids, bioactive compounds, and functional materials, so having a ready-to-use indole derivative such as this one considerably simplifies the research workflow.

The characteristics that make this compound a preferred choice begin with the electron-rich nature of the indole ring, which renders it reactive toward electrophilic reagents, combined with a substitution pattern that is already well defined. The methyl group on the nitrogen removes the N–H proton, so researchers do not need to add a separate nitrogen protection step and avoid side reactions arising from N–H acidity. The methyl group at position 3, meanwhile, directs reactivity toward other positions on the ring, making the selectivity pattern of a reaction more predictable. Together, these features make it a clean model substrate for mechanistic studies as well as for preparative work.

In Indonesian laboratories, this material is typically used in university and institutional organic synthesis groups, in medicinal chemistry research directed at indole-based scaffolds, and in method development work where a well-characterised, predictable heterocyclic substrate is required. It is also useful in teaching and training contexts that demonstrate heterocyclic reactivity, and as a reference substrate when researchers validate new synthetic routes or analytical procedures involving indole chemistry.

Related TCI products

Heterocyclic building block synthesis — the pre-formed indole core lets chemists begin elaboration directly, removing the need to construct the bicyclic framework before any target-oriented chemistry can start.
Electrophilic substitution studies — the electron-rich indole ring reacts readily with electrophilic reagents, giving a dependable substrate for exploring reaction conditions, reagent scope, and relative rates.
Medicinal chemistry scaffold preparation — the indole motif recurs across alkaloids and bioactive compounds, so this derivative serves as a practical entry point for building candidate structures.
Reaction mechanism investigation — the absence of an acidic N–H proton eliminates a common source of side reactions, producing cleaner reaction profiles for interpreting mechanistic outcomes.
Regioselectivity method development — with position 3 already methylated, reactivity is directed to other ring positions, making selectivity outcomes easier to predict and compare across conditions.

Brand	TCI (Tokyo Chemical Industry)
CAS number	875-30-9
Molecular formula	—
Purity	—
Category	Chemistry > Building Blocks > Heterocyclic Building Blocks
Pack sizes	available in standard TCI research-scale packaging; please confirm the size required when ordering
Physical form	—
Storage	keep in the closed original container under the conditions stated on the manufacturer's label

Catalogue number: D6021
Chemical name: 1,3-Dimethyl-1H-indole

Store the container tightly closed in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and strong oxidising agents, following the conditions specified on the manufacturer's label and safety data sheet. Keep the material in its original supplier packaging wherever possible; if transfer is necessary, use chemically compatible, clearly labelled containers with secure closures. Handle in a fume hood using appropriate personal protective equipment, including safety glasses, gloves, and a laboratory coat. Avoid inhalation of vapours and contact with skin and eyes. Close the container promptly after each use to limit exposure to air and moisture, and dispose of residues and contaminated materials through the laboratory's designated chemical waste stream in accordance with institutional procedures.

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