Indole - ≥99% , CAS No.120-72-9

CAS: 120-72-9 Cat. No.: I104726 Formula: C8H7N Molecular Weight: 117.15 Beilstein Registry Number: 107693 EC Number: 204-420-7
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
Indole (white flake) | Indole, puriss., >=98.5% (GC) | I-0800 | SCHEMBL698 | SR-01000944736 | AMY3411 | BBL011739 | CCRIS 4421 | DB04532 | Tox21_302937 | BIDD:GT0304 | HSDB 599 | Indole 100 microg/mL in Acetonitrile | 1H-Benzo[b]pyrrole | INDOLE BENZO-P
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
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Size
USA
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Price
Qty
25g
I104726-25g
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100g
I104726-100g
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$49.90
500g
I104726-500g
1 In stock
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$79.90

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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 113 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

· Indole is a nitrogen-containing heterocycle used in the total synthesis of compounds such as goniomitine,(?)-isatisine A, and (±)-aspidospermidine.

· It is used as an electron donor moiety in synthesizing dyes for organic photovoltaics.

· It can also be used in the preparation of indole based conjugated small molecules for nonlinear optics applications.

Specifications

Synonyms
Indole (white flake) | Indole, puriss., >=98.5% (GC) | I-0800 | SCHEMBL698 | SR-01000944736 | AMY3411 | BBL011739 | CCRIS 4421 | DB04532 | Tox21_302937 | BIDD:GT0304 | HSDB 599 | Indole 100 microg/mL in Acetonitrile | 1H-Benzo[b]pyrrole | INDOLE BENZO-P
Specifications & Purity
≥99%
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥99%
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/504750419
Canonical Smiles
C1=CC=C2C(=C1)C=CN2
IUPAC Name
1H-indole
InChIKey
SIKJAQJRHWYJAI-UHFFFAOYSA-N
INCHI
1S/C8H7N/c1-2-4-8-7(3-1)5-6-9-8/h1-6,9H
Isomeric SMILES
C1=CC=C2C(=C1)C=CN2
WGK Germany
1
RTECS
NL2450000
UN Number
2811
Packing Group
III
Molecular Weight
117.15
Beilstein
107693
Reaxy-Rn
107693
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=107693&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassIndoles and derivatives
SubclassIndoles
Intermediate Tree Nodes Not available
Direct ParentIndoles
Alternative Parents Benzenoids  Pyrroles  Heteroaromatic compounds  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Indole - Benzenoid - Heteroaromatic compound - Pyrrole - Azacycle - Organic nitrogen compound - Organopnictogen compound - Hydrocarbon derivative - Organonitrogen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as indoles. These are compounds containing an indole moiety, which consists of pyrrole ring fused to benzene to form 2,3-benzopyrrole.
External Descriptors an indole
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
CA2 Tclin Carbonic anhydrase II (17698 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ADK Tchem Adenosine kinase (1481 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CA6 Tclin Carbonic anhydrase VI (993 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CA1 Tclin Carbonic anhydrase I (13240 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ALB Tchem Serum albumin (2651 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CES1 Tchem Acyl coenzyme A:cholesterol acyltransferase (1029 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
MCF7 (126967 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
MRC5 (9203 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SK-N-SH (1499 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
U-251 (51189 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
U-87 MG (3946 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
A549 (127892 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
NCI-H292 (733 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
MDA-MB-231 (73002 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CDK5 Tchem Cyclin-dependent kinase 5/CDK5 activator 1 (3697 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
GSK3A Tclin Glycogen synthase kinase-3 (736 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ITGAL Tclin Intercellular adhesion molecule (ICAM-1), Integrin alpha-L/beta-2 (760 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
CA4 Carbonic anhydrase IV (1713 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Saccharomyces cerevisiae (19171 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Cutibacterium acnes (887 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Rattus norvegicus (775804 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Hepatitis C virus (23859 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
INS1 (2867 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
E Lysozyme (95 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Plutella xylostella (1838 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
PYGM Glycogen phosphorylase, muscle form (1331 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Trpa1 Transient receptor potential cation channel subfamily A member 1 (1003 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Spodoptera exigua (540 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CA3 Carbonic anhydrase 3 (27 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

31 results found

Lot NumberCertificate TypeDateItem
G2609118Certificate of AnalysisMar 25, 2026 I104726
D2608576Certificate of AnalysisMar 25, 2026 I104726
D2608566Certificate of AnalysisMar 25, 2026 I104726
D2608559Certificate of AnalysisMar 25, 2026 I104726
D2608555Certificate of AnalysisMar 25, 2026 I104726
L2509016Certificate of AnalysisJun 14, 2025 I104726
F2530246Certificate of AnalysisJun 14, 2025 I104726
F2530102Certificate of AnalysisJun 14, 2025 I104726
F2530099Certificate of AnalysisJun 14, 2025 I104726
C2630041Certificate of AnalysisJun 14, 2025 I104726
E2530062Certificate of AnalysisMar 17, 2025 I104726
C2527609Certificate of AnalysisMar 17, 2025 I104726
C2527608Certificate of AnalysisMar 17, 2025 I104726
C2527287Certificate of AnalysisMar 17, 2025 I104726
C2527610Certificate of AnalysisMar 17, 2025 I104726
A2517293Certificate of AnalysisJan 03, 2025 I104726
A2517301Certificate of AnalysisJan 03, 2025 I104726
A2517304Certificate of AnalysisJan 03, 2025 I104726
A2517307Certificate of AnalysisJan 03, 2025 I104726
J2422044Certificate of AnalysisOct 28, 2024 I104726
L2427217Certificate of AnalysisOct 28, 2024 I104726
I2418256Certificate of AnalysisApr 29, 2024 I104726
I2418257Certificate of AnalysisApr 29, 2024 I104726
I2202356Certificate of AnalysisAug 16, 2022 I104726
I2202357Certificate of AnalysisAug 16, 2022 I104726
I2202358Certificate of AnalysisAug 16, 2022 I104726
I2402442Certificate of AnalysisAug 16, 2022 I104726
J2418115Certificate of AnalysisAug 16, 2022 I104726
C23101240Certificate of AnalysisAug 03, 2021 I104726
H2311036Certificate of AnalysisAug 03, 2021 I104726
A2423048Certificate of AnalysisAug 03, 2021 I104726
Chemical and Physical Properties
SolubilitySoluble in methanol and water.
Sensitivitylight & air sensitive
Refractive Index1.609
Flash Point(°F)249°F
Flash Point(°C)121°C
Boil Point(°C)254°C
Melt Point(°C)52.5°C
Molecular Weight117.150 g/mol
XLogP32.100
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count0
Rotatable Bond Count0
Exact Mass117.058 Da
Monoisotopic Mass117.058 Da
Topological Polar Surface Area15.800 Ų
Heavy Atom Count9
Formal Charge0
Complexity101.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Synthesis of molecular block “two-sided” indole
Boranes (Dimethylsulfide Borane, Borane-Tetrahydrofuran Complex)
Boc resin lysis protocol
Fragrance Science: From “Smells Nice” to a Chemical World That Can Be Studied and Standardized
Indole Product Navigation: How N-Position State, the C3 Connection Handle, and Core Scaffold Variants Map to Synthetic Interfaces and Research Uses (Tables A–E)
Pyrrole Research Reagent Selection Roadmap: Structure—Reactive Sites—Application Throughline and Reagent Classification Guide (Tables 1–4)
Reaction Roles of DBU in Different Systems: Experimental Judgment from a Strong Organic Base to Nucleophilic Catalysis and Participation in the Reaction Pathway
Experimental Selection of SEM-Cl: From O/N-SEM Protection and Directed Functionalization of N-Heterocycles to the Introduction of Protected C1 Fragments
Understanding Indoline: Analysis of the Structural Features, Properties, and Applications of the 2,3-Dihydroindole Scaffold
Overcoming the Electronic-Effect Limitations of Nucleophilic Aromatic Substitution in Fluoroarenes: Anion Activation, Concerted Substitution, and HF Capture by t-Bu-P4
Sources, Host-Regulatory Mechanisms, and Tumor-Immune Effects of Gut Microbiota-Derived Metabolites
Reaction Logic of I₂/DMSO-Mediated Oxidation of Aryl Methyl Ketones: In Situ Generation, Trapping, and Heterocycle Construction of Aryl Glyoxals
From a DENV-2 Screening Hit to Coverage of All Four Serotypes: Pan-Serotype Structure–Activity Relationship Optimization of JNJ-1802
From 459,000 Recorded Ring Systems to 3,902 Candidate Ring Systems: Selection Patterns of Clinically Relevant Ring Systems
From Serotonin to Triptans: Recognition of the Indole–Ethylamine Pharmacophore, C5 Substitution, and 5HT₁B/5HT₂B Selectivity
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What is the purity of this product?
This product is supplied at ≥99% purity (chemical assay). Lot-specific values are stated on the Certificate of Analysis.
How should this product be stored?
Store at 2–8 °C under argon. It is supplied under an argon blanket; reseal under inert gas after each use.
How is this product shipped?
This product ships chilled on wet ice. Unpack on arrival and transfer it to the storage condition stated above.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 120-72-9, the molecular formula is C8H7N, and the molecular weight is 117.15 g/mol. InChIKey SIKJAQJRHWYJAI-UHFFFAOYSA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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