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Impurities and reference standards

6-Hydroxyindole

Also known as 1H-indol-6-ol, Imexine oba, 6-indolol

CAS 2380-86-1Formula C8H7NOMolar mass 133.15 g/molEC 417-020-4
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant, Hazardous to the environment 19 suppliers listed
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6-Hydroxyindole chemical structure, C8H7NO, CAS 2380-86-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2380-86-1
Formula
C8H7NO
Molar mass
133.15 g/mol
EC number
417-020-4
HS code
293399
Category
Impurities and reference standards

What is 6-Hydroxyindole?

Plain description, key identifiers and synonyms

6-Hydroxyindole is a chemical substance with the molecular formula C8H7NO and a molar mass of 133.15 g/mol. Its CAS registry number is 2380-86-1. The IUPAC name is 1H-indol-6-ol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1H-indol-6-ol
CAS number
2380-86-1 CAS number cross-checked
EC numbers
417-020-4, 626-440-9
Molecular formula
C8H7NO
UNII
3I03JZ599T
MDL number
MFCD00152101
INCI name
6-HYDROXYINDOLE
InChIKey
XAWPKHNOFIWWNZ-UHFFFAOYSA-N
InChI
InChI=1S/C8H7NO/c10-7-2-1-6-3-4-9-8(6)5-7/h1-5,9-10H
SMILES (canonical and isomeric)
C1=CC(=CC2=C1C=CN2)O

Synonyms

  • 1H-indol-6-ol
  • Imexine oba
  • 6-indolol
  • indolol
  • indol-6-ol
  • 6-hydroxy indole
  • Indol-6-ol (6CI,7CI,8CI)
  • 6hydroxyindole
  • 6-hydroxy-indole
  • 1H-indole-6-ol
  • 6-hydroxy-1h-indole
  • Pindolol Impurity 10
  • 1H-indol-6-ol, 6-Hydroxyindole
  • 6-Hydroxyindole, >=99.0% (GC)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
133.15 g/molcalc.
Exact mass
133.0528 Dacalc.
LogP (octanol/water)
1.87calc.
Topological polar surface area
36.02 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc2[nH]ccc2c1

c1ccc2[nH]ccc2c1

2 rings, 9 atoms, the Indole ring system.

25,097 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H317May cause an allergic skin reaction.
  • H318Causes serious eye damage.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (17)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

6-Hydroxyindole suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 19 suppliers
19 of 19 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

19 suppliers in 3 countries

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6-Hydroxyindole price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name 6-HYDROXYINDOLE(hair dyeing)

Functional uses

  • Dye

Cosmetic functions

  • Hair dyeing

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 613-218-00-1

Health and food

  • EU cosmetic ingredient inventory
  • EU Cosmetics Regulation Annex III, restricted in cosmetics
    Name: 6-Hydroxy-indole, Ref no: 209, Annex ref: III/209

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 6-Hydroxyindole is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 6-Hydroxyindole is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 6-Hydroxyindole, based on the data on this page

What is 6-Hydroxyindole?

6-Hydroxyindole is a chemical substance with the molecular formula C8H7NO and a molar mass of 133.15 g/mol. Its CAS registry number is 2380-86-1. The IUPAC name is 1H-indol-6-ol.

What is the CAS number of 6-Hydroxyindole?

The CAS registry number of 6-Hydroxyindole is 2380-86-1.

What is the molecular formula and weight of 6-Hydroxyindole?

The molecular formula of 6-Hydroxyindole is C8H7NO and its molar mass is 133.15 g/mol.

What is 6-Hydroxyindole used for?

Use classes: Cosmetics.

Is 6-Hydroxyindole hazardous?

6-Hydroxyindole carries the GHS signal word "Danger". Main hazards: harmful if swallowed, may cause an allergic skin reaction, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 6-Hydroxyindole?

6-Hydroxyindole is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 6-Hydroxyindole?

CompoundList lists 19 suppliers of 6-Hydroxyindole in China, United States and Japan. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 6-Hydroxyindole?

Suppliers quote 6-Hydroxyindole on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 6-Hydroxyindole

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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