5-Fluoro-2-methylindole

CAS NO.：399-72-4
Empirical Formula: C9H8FN
Molecular Weight: 149.16
MDL number: MFCD02093649
EINECS: 609-764-5
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:17:50

What is 5-Fluoro-2-methylindole?

Description

5-Fluoro-2-methylindole is a chemical intermediate that can be used in the synthesis of other compounds. It is a versatile building block with many applications, such as being a useful intermediate for the synthesis of heterocyclic compounds. This compound reacts with aniline to form 2,6-diaminopyridine, which has been shown to have anti-inflammatory properties.

General Description

5-Fluoro-2-methylindole (5-Fluoro-2-methyl-1H-indole) is a 5-substituted-2-methyl-1H-indole.

Synthesis

1-(5-fluoro-2-nitrophenyl) propane-2-one (0.5mmol, 99 mg), zinc powder (3.0mmol, 196 mg), and acetic acid (6.0mmol, 360 mg) was added to the reaction tube, followed by adding ethanol to 2 ml at 90 °C for 3h. After cooling to room temperature, the reaction system was added 20 ml water. 5-Fluoro-2-methylindole was obtained after purification.

Solubility in water

Very soluble in N,N-Dimethylformamide,Soluble in methanol,Sparingly soluble inglacial acetic acid, Very slightly soluble inchloroform, Practically insoluble in water.

Properties of 5-Fluoro-2-methylindole

Melting point:	98-101 °C (lit.)
Boiling point:	112-120C
Density	1.219±0.06 g/cm3(Predicted)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
pka	16.73±0.30(Predicted)
form	Solid
color	Light yellow to Brown
InChI	InChI=1S/C9H8FN/c1-6-4-7-5-8(10)2-3-9(7)11-6/h2-5,11H,1H3
CAS DataBase Reference	399-72-4(CAS DataBase Reference)

Safety information for 5-Fluoro-2-methylindole

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.