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2-Methylindole

CAS No.
95-20-5
Chemical Name:
2-Methylindole
Synonyms
2-METHYL-1H-INDOLE;1H-INDOLE, 2-METHYL-;NSC 7514;AURORA 15496;METHYLKETOLE;a-Methylindol;-Methylindole;2-METHYLINDOLE;2-methyl-indol;METHYLINDOLE(2-)
CBNumber:
CB1711727
Molecular Formula:
C9H9N
Molecular Weight:
131.17
MDL Number:
MFCD00005616
MOL File:
95-20-5.mol
MSDS File:
SDS
Last updated:2024-08-21 22:41:43

2-Methylindole Properties

Melting point 57-59 °C (lit.)
Boiling point 273 °C (lit.)
Density 1,07 g/cm3
refractive index 1.6070 (estimate)
Flash point 141 °C
storage temp. Keep in dark place,Inert atmosphere,Room temperature
solubility Chloroform (Sparingly), Methanol (Slightly)
pka 17.57±0.30(Predicted)
form Crystals, Flakes, or Crystalline Powder
color Yellow to reddish-purple or brown
Odor at 0.10 % in dipropylene glycol. animal indole fresher than skatole with no fecal odor
Odor Type animal
Water Solubility Insoluble in water.
Sensitive Light Sensitive
BRN 109781
InChIKey BHNHHSOHWZKFOX-UHFFFAOYSA-N
LogP 2.530
CAS DataBase Reference 95-20-5(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII I7CN58827I
NIST Chemistry Reference 1H-Indole, 2-methyl-(95-20-5)
EPA Substance Registry System 1H-Indole, 2-methyl- (95-20-5)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P264-P270-P301+P312-P501
Hazard Codes  Xn,Xi
Risk Statements  20/21/22-41
Safety Statements  36/37-24/25-39-26
RIDADR  3335
WGK Germany  3
RTECS  NM0345000
8-10-13-23
TSCA  Yes
HS Code  29339990
NFPA 704
1
2 1

2-Methylindole price More Price(40)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich M51407 2-Methylindole 98% 95-20-5 25g $50.7 2024-03-01 Buy
Sigma-Aldrich 41069 2-Methylindole analytical standard 95-20-5 100mg $182 2022-05-15 Buy
TCI Chemical M0346 2-Methylindole >99.0%(GC) 95-20-5 25g $47 2024-03-01 Buy
TCI Chemical M0346 2-Methylindole min. 99.0 % 95-20-5 100G $119 2024-03-01 Buy
Alfa Aesar A10764 2-Methylindole, 98+% 95-20-5 50g $45.65 2024-03-01 Buy
Product number Packaging Price Buy
M51407 25g $50.7 Buy
41069 100mg $182 Buy
M0346 25g $47 Buy
M0346 100G $119 Buy
A10764 50g $45.65 Buy

2-Methylindole Chemical Properties,Uses,Production

Chemical Properties

Colorless needle or yellow to reddish-purple or brown crystals, flakes. Has an animal type odor.Soluble in ethanol and ether, insoluble in water.

Uses

2-Methylindole is an intermediate in the synthesis of indole derivative with potential antifungal activities. It can be used as a raw material for the preparation of deacetylase (HDAC) inhibitor panobinostat.

Uses

2-Methylindole is used as a reactant for regioselective synthesis of oxopyrrolidine analogs via iodine-catalyzed Markovnikov addition reaction, Friedel-Crafts alkylation reactions, preparation of tryptophan dioxygenase inhibitors pyridyl-ethenyl-indoles as potential anticancer immunomodulators, Michael addition reactions and in synthesis of cyclooxygenase-1 (COX-1)/cyclooxygenase-2 (COX-2) inhibitors.

Definition

ChEBI: 2-Methylindole is a methylindole that is 1H-indole substituted by a methyl group at position 2. It derives from a hydride of a 1H-indole.

Application

2-Methylindole is used as a reactant Reactant for:
Regioselective synthesis of oxopyrrolidine analogs via iodine-catalyzed Markovnikov addition reaction
Friedel-Crafts alkylation reactions
Preparation of tryptophan dioxygenase inhibitors pyridyl-ethenyl-indoles as potential anticancer immunomodulators
Preparation of plant-growth inhibitors
Michael addition reactions
Synthesis of cyclooxygenase-1 (COX-1)/cyclooxygenase-2 (COX-2) inhibitors

Preparation

2-Methylindole was synthesized from 2-Acetamidotoluene by the following procedure. 2-Acetamidotoluene was added to the mixture of anhydrous ether and sodium amide, heated to 240-260°C under the protection of nitrogen flow, kept for 10min, a large amount of gas was generated in the reaction, and the reaction ended when the gas stopped escaping, and cooled. Ethanol and warm water were added and heated to decompose the sodium derivative of 2-Methylindole and excess sodium amide. After cooling, it was extracted with ether. The extract was concentrated and then distilled, and the fractions at 119-126°C (0.4-0.53kPa) were collected to obtain 2-Methylindole with a yield of 80%-83%. The product can be purified by methanol recrystallization.

Synthesis Reference(s)

Journal of the American Chemical Society, 98, p. 2674, 1976 DOI: 10.1021/ja00425a051
Organic Syntheses, Coll. Vol. 3, p. 597, 1955
Tetrahedron Letters, 9, p. 3499, 1968

Purification Methods

Crystallise it from *benzene. It has also been purified by zone melting. The picrate has m 139o (from Et2O or Et2O/MeOH). [Cohen et al. J Am Chem Soc 82 2184 1960, Beilstein 20 III/IV 3202, 20/7 V 59.]

6872-06-6
95-20-5
Synthesis of 2-Methylindole from 2-Methylindoline
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View Lastest Price from 2-Methylindole manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2-Methylindole pictures 2024-11-27 2-Methylindole
95-20-5
US $0.00 / KG 1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD
2-Methylindole pictures 2024-11-05 2-Methylindole
95-20-5
US $0.00-0.00 / KG 5mg 99%HPLC 2000tons Shaanxi Dideu Medichem Co. Ltd
2-Methylindole pictures 2024-10-11 2-Methylindole
95-20-5
US $9.00 / KG 1KG 99.9 1 ton Hebei Chuanghai Biotechnology Co,.LTD
  • 2-Methylindole pictures
  • 2-Methylindole
    95-20-5
  • US $0.00 / KG
  • 98%min
  • WUHAN FORTUNA CHEMICAL CO., LTD
  • 2-Methylindole pictures
  • 2-Methylindole
    95-20-5
  • US $0.00-0.00 / KG
  • 99%HPLC
  • Shaanxi Dideu Medichem Co. Ltd
  • 2-Methylindole pictures
  • 2-Methylindole
    95-20-5
  • US $9.00 / KG
  • 99.9
  • Hebei Chuanghai Biotechnology Co,.LTD
ALPHA-METHYLINDOLE 2-Methylindole, 98+% a-Methylindol 2-METHYLINDOLE TECHNICAL GRADE 2-Methylindole 99.0% 2-Methylindole, 98% 100GR 2-METHYLINDOLE FOR SYNTHESIS 100 G NSC 7514 2-methyl-1h-indol 2-methyl-indol 2-METHYLINDOLE AURORA 15496 LABOTEST-BB LT01274391 METHYLINDOLE(2-) METHYLKETOLE Indole, 2-methyl- -Methyl-1H-indole -Methylindole 2-Methylindole> 1H-INDOLE, 2-METHYL- 2-METHYL-1H-INDOLE 95-20-5 95-2D-5 13939-00-0 C6H4NHCCH3CH Indoles Simple Indoles Heterocyclic Building Blocks Building Blocks Heterocycle-Indole series fine chemical intermediates fine chemicals Building Blocks Heterocyclic Building Blocks Indoles Simple Indoles Indoles and derivatives Indole Intermediates of Dyes and Pigments bc0001