MilliporeSigma
All Photos(1)

W259306

Sigma-Aldrich

Indole

≥99%, FG

Synonym(s):
1H-Benzo[b]pyrrole
Empirical Formula (Hill Notation):
C8H7N
CAS Number:
Molecular Weight:
117.15
FEMA Number:
2593
Beilstein:
107693
EC Number:
Council of Europe no.:
560
MDL number:
PubChem Substance ID:
Flavis number:
14.007
NACRES:
NA.21

Quality Level

biological source

synthetic

grade

FG
Fragrance grade
Kosher

Agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FDA 21 CFR 117
FDA 21 CFR 172.515

assay

≥99%

impurities

≤250 ppm Hexane, residual (solvent)

bp

253-254 °C (lit.)

mp

51-54 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

animal; pungent; floral

SMILES string

c1ccc2[nH]ccc2c1

InChI

1S/C8H7N/c1-2-4-8-7(3-1)5-6-9-8/h1-6,9H

InChI key

SIKJAQJRHWYJAI-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Indole is one of the main flavor constituents of green tea.

Packaging

100 g in glass bottle
1 kg in glass bottle
10, 25 kg in poly drum

Biochem/physiol Actions

Taste at 0.3-2 ppm

Other Notes

Natural occurrence: Burley tobacco, butter, coffee, dried bonito, egg, fish, malt, rum, tea, and wine.

Pictograms

Skull and crossbonesEnvironment

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Eye Irrit. 2

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

249.8 °F

Flash Point(C)

121 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Further Investigation of Flavor Constituents in Manufactured Green Tea
Yamanishi T, et al.
Agricultural and Biological Chemistry, 34(4), 599-608 (1970)
Hélène Gérard et al.
The Journal of organic chemistry, 78(18), 9233-9242 (2013-08-07)
The chemo-, regio-, and stereoselectivities of multicomponent [4 + 2]/[3 + 2] domino cycloaddition reactions involving nitroindole derivatives with vinylethers and acrylates are studied computationnally and compared to experimental results. In this process, the nitroarene first reacts as an electron-deficient
Sanjay Saikia et al.
Mycological research, 112(Pt 2), 184-199 (2008-02-12)
Indole-diterpenes are a structurally diverse group of secondary metabolites with a common cyclic diterpene backbone derived from geranylgeranyl diphosphate and an indole group derived from indole-3-glycerol phosphate. Different types and patterns of ring substitutions and ring stereochemistry generate this structural
Facile access to 3-acylindoles through palladium-catalyzed addition of indoles to nitriles: the one-pot synthesis of indenoindolones.
Yuanhong Ma et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(4), 1189-1193 (2012-12-15)
Total synthesis of the tremorgenic indole diterpene paspalinine.
Masaru Enomoto et al.
Angewandte Chemie (International ed. in English), 51(51), 12833-12836 (2012-11-09)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service