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Heterocyclic building blocks

5-Hydroxyoxolan-2-one

Also known as 2(3H)-Furanone, dihydro-5-hydroxy-, 5-hydroxytetrahydrofuran-2-one

CAS 50768-69-9Formula C4H6O3Molar mass 102.09 g/molEC 842-609-1
GHS signal word: Warning. Pictograms: Harmful or irritant
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5-Hydroxyoxolan-2-one chemical structure, C4H6O3, CAS 50768-69-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
50768-69-9
Formula
C4H6O3
Molar mass
102.09 g/mol
EC number
842-609-1
HS code
293220
Category
Heterocyclic building blocks

What is 5-Hydroxyoxolan-2-one?

Plain description, key identifiers and synonyms

5-Hydroxyoxolan-2-one is a chemical substance with the molecular formula C4H6O3 and a molar mass of 102.09 g/mol. Its CAS registry number is 50768-69-9.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5-hydroxyoxolan-2-one
CAS number
50768-69-9 CAS number cross-checked
EC number
842-609-1
Molecular formula
C4H6O3
MDL number
MFCD29051008
InChIKey
FYNVARJNCVQAAI-UHFFFAOYSA-N
InChI
InChI=1S/C4H6O3/c5-3-1-2-4(6)7-3/h3,5H,1-2H2
SMILES (canonical and isomeric)
C1CC(=O)OC1O

Synonyms

  • 2(3H)-Furanone, dihydro-5-hydroxy-
  • 5-hydroxytetrahydrofuran-2-one

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
102.09 g/molcalc.
Exact mass
102.0317 Dacalc.
LogP (octanol/water)
-0.36calc.
Topological polar surface area
46.53 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
Formal charge
0calc.
Stereocentres
1calc.
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=C1CCCO1

O=C1CCCO1

1 ring, 6 atoms, the gamma-Butyrolactone ring system.

1,692 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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • 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).
  • 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

5-Hydroxyoxolan-2-one suppliers

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5-Hydroxyoxolan-2-one price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 5-Hydroxyoxolan-2-one 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 5-Hydroxyoxolan-2-one is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 5-Hydroxyoxolan-2-one, based on the data on this page

What is 5-Hydroxyoxolan-2-one?

5-Hydroxyoxolan-2-one is a chemical substance with the molecular formula C4H6O3 and a molar mass of 102.09 g/mol. Its CAS registry number is 50768-69-9.

What is the CAS number of 5-Hydroxyoxolan-2-one?

The CAS registry number of 5-Hydroxyoxolan-2-one is 50768-69-9.

What is the molecular formula and weight of 5-Hydroxyoxolan-2-one?

The molecular formula of 5-Hydroxyoxolan-2-one is C4H6O3 and its molar mass is 102.09 g/mol.

What is 5-Hydroxyoxolan-2-one used for?

Known uses and roles of 5-Hydroxyoxolan-2-one include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 5-Hydroxyoxolan-2-one hazardous?

5-Hydroxyoxolan-2-one carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 5-Hydroxyoxolan-2-one?

5-Hydroxyoxolan-2-one is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 5-Hydroxyoxolan-2-one?

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What is the price of 5-Hydroxyoxolan-2-one?

Suppliers quote 5-Hydroxyoxolan-2-one 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 5-Hydroxyoxolan-2-one

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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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