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Impurities and reference standards

4-Hydroxycoumarin

Also known as 4-Coumarinol, Benzotetronic acid, 4-hydroxychromen-2-one

CAS 1076-38-6Formula C9H6O3Molar mass 162.14 g/molEC 214-060-2
GHS signal word: Warning. Pictograms: Harmful or irritant 57 suppliers listed
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4-Hydroxycoumarin chemical structure, C9H6O3, CAS 1076-38-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1076-38-6
Formula
C9H6O3
Molar mass
162.14 g/mol
EC number
214-060-2
HS code
293220
Category
Impurities and reference standards

What is 4-Hydroxycoumarin?

Plain description, key identifiers and synonyms

4-hydroxycoumarin is a hydroxycoumarin that is coumarin in which the hydrogen at position 4 is replaced by a hydroxy group. It is a conjugate acid of a 4-hydroxycoumarin(1-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-hydroxychromen-2-one
CAS number
1076-38-6 CAS number cross-checkedOther or deprecated CAS: 22105-09-5
EC number
214-060-2
Molecular formula
C9H6O3
UNII
X954ZLL2RD
MDL number
MFCD00006856
InChIKey
VXIXUWQIVKSKSA-UHFFFAOYSA-N
InChI
InChI=1S/C9H6O3/c10-7-5-9(11)12-8-4-2-1-3-6(7)8/h1-5,10H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C(=CC(=O)O2)O

Synonyms

  • 4-Coumarinol
  • Benzotetronic acid
  • 4-hydroxychromen-2-one
  • Coumarin, 4-hydroxy-
  • 4-Hydroxy-2H-1-benzopyran-2-one
  • 2H-1-Benzopyran-2-one, 4-hydroxy-
  • 4-hydroxy-2-chromenone
  • 4-hydroxy-2H-benzo[b]pyran-2-one
  • 4-hydroxy-2H-benzo(b)pyran-2-one
  • 4-OH coumarin
  • 4-Hydroxy-2H-chromen-2-one
  • 4-Hydroxy coumarin
  • 4-Hydroxy-chromen-2-one
  • 4-Hydroxycoumarine
  • Warfarin sodium EP Impurity B
  • Coumarinol
  • 4-Monohydroxycoumarin
  • 2-Hydroxy-4H-1-benzopyran-4-one
  • Warfarin sodium impurity b
  • 4-Hydroxycoumarin, Vetec(TM) reagent grade, 98%
  • 4-Hydroxycoumarins
  • 2-Hydroxychromone
  • 4-hydroxy-coumarin
  • 4-Hydroxy-1-benzopyran-2-one
  • 4-Hydroxy-2H-1-benzopyran-2-one (4-Hydroxycoumarin)
Show all 35 synonyms
  • 4H-1-Benzopyran-4-one, 2-hydroxy-
  • hydroxychromone
  • 4hydroxycoumarin
  • 4-hyroxycoumarin
  • 4-hydroxyl coumarin
  • 4-Hydroxycoumarin, 98%
  • 4-Hydroxy-1-benzopy
  • 5-18-01-00378 (Beilstein Handbook Reference)
  • MEGxm0_000452
  • ACon1_001952

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
162.14 g/molcalc.
Exact mass
162.0317 Dacalc.
LogP (octanol/water)
1.5calc.
Topological polar surface area
50.44 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
12calc.
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, O=c1ccc2ccccc2o1

O=c1ccc2ccccc2o1

2 rings, 11 atoms, the Coumarin ring system.

3,845 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • 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.
  • P271Use only outdoors or in a well-ventilated area.
  • 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.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • 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

4-Hydroxycoumarin suppliers

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All 57 suppliers
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Where suppliers are based

57 suppliers in 11 countries

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4-Hydroxycoumarin price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 4-Hydroxycoumarin is traded under.

HS 2932.20Indicative HS code

Lactones

World exports in 2024
$1.97B
−4.7% vs 2023, imports $2.07B
2019 to 2024
Top exporters
  1. China56.3%
  2. India * partner reported7.4%
  3. Germany7.3%
Top importers
  1. United States14.2%
  2. India * partner reported13.5%
  3. Brazil8.5%

* Partner reported figures, a lower bound.

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

The HS code shown for 4-Hydroxycoumarin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 4-Hydroxycoumarin, based on the data on this page

What is 4-Hydroxycoumarin?

4-hydroxycoumarin is a hydroxycoumarin that is coumarin in which the hydrogen at position 4 is replaced by a hydroxy group. It is a conjugate acid of a 4-hydroxycoumarin(1-).

What is the CAS number of 4-Hydroxycoumarin?

The CAS registry number of 4-Hydroxycoumarin is 1076-38-6. Other or deprecated CAS numbers: 22105-09-5.

What is the molecular formula and weight of 4-Hydroxycoumarin?

The molecular formula of 4-Hydroxycoumarin is C9H6O3 and its molar mass is 162.14 g/mol.

Is 4-Hydroxycoumarin hazardous?

4-Hydroxycoumarin carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 4-Hydroxycoumarin?

4-Hydroxycoumarin is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 4-Hydroxycoumarin?

CompoundList lists 57 suppliers of 4-Hydroxycoumarin in China, United States, India, Canada and 7 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 4-Hydroxycoumarin in India?

9 suppliers in India list 4-Hydroxycoumarin on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 4-Hydroxycoumarin?

Suppliers quote 4-Hydroxycoumarin 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 4-Hydroxycoumarin

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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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