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Heterocyclic building blocks

beta-Butyrolactone, (+)-

Also known as (R)-beta-Butyrolactone, (+)-beta-Butyrolactone, 2-Oxetanone, 4-methyl-, (4R)-

CAS 32082-74-9Formula C4H6O2Molar mass 86.09 g/mol
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beta-Butyrolactone, (+)- chemical structure, C4H6O2, CAS 32082-74-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
32082-74-9
Formula
C4H6O2
Molar mass
86.09 g/mol
HS code
293220
Category
Heterocyclic building blocks

What is beta-Butyrolactone, (+)-?

Plain description, key identifiers and synonyms

beta-Butyrolactone, (+)- is a chemical substance with the molecular formula C4H6O2 and a molar mass of 86.09 g/mol. Its CAS registry number is 32082-74-9. The IUPAC name is (4R)-4-methyloxetan-2-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4R)-4-methyloxetan-2-one
CAS number
32082-74-9
Molecular formula
C4H6O2
UNII
372EZ3E208
MDL number
MFCD12827426
InChIKey
GSCLMSFRWBPUSK-GSVOUGTGSA-N
InChI
InChI=1S/C4H6O2/c1-3-2-4(5)6-3/h3H,2H2,1H3/t3-/m1/s1
Canonical SMILES
CC1CC(=O)O1
Isomeric SMILES
C[C@@H]1CC(=O)O1

Synonyms

  • (R)-beta-Butyrolactone
  • (+)-beta-Butyrolactone
  • 2-Oxetanone, 4-methyl-, (4R)-
  • 2-Oxetanone, 4-methyl-, D-(+)-
  • (R)-(+)-beta-Methyl-beta-propiolactone
  • (R)-4-Methyloxetan-2-one
  • (4R)-4-methyloxetan-2-one
  • (R)-?-Butyrolactone

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
86.09 g/molcalc.
Exact mass
86.0368 Dacalc.
LogP (octanol/water)
0.32calc.
Topological polar surface area
26.3 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
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=C1CCO1

O=C1CCO1

1 ring, 5 atoms, the beta-Propiolactone ring system.

185 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

beta-Butyrolactone, (+)- suppliers

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beta-Butyrolactone, (+)- 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 beta-Butyrolactone, (+)- 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 beta-Butyrolactone, (+)- is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about beta-Butyrolactone, (+)-, based on the data on this page

What is beta-Butyrolactone, (+)-?

beta-Butyrolactone, (+)- is a chemical substance with the molecular formula C4H6O2 and a molar mass of 86.09 g/mol. Its CAS registry number is 32082-74-9. The IUPAC name is (4R)-4-methyloxetan-2-one.

What is the CAS number of beta-Butyrolactone, (+)-?

The CAS registry number of beta-Butyrolactone, (+)- is 32082-74-9.

What is the molecular formula and weight of beta-Butyrolactone, (+)-?

The molecular formula of beta-Butyrolactone, (+)- is C4H6O2 and its molar mass is 86.09 g/mol.

What is beta-Butyrolactone, (+)- used for?

Known uses and roles of beta-Butyrolactone, (+)- include building blocks in research and laboratory and screening compounds in research and laboratory.

Is beta-Butyrolactone, (+)- hazardous?

No GHS hazard classification for beta-Butyrolactone, (+)- is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of beta-Butyrolactone, (+)-?

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

Where can I buy beta-Butyrolactone, (+)-?

Post a free request on CompoundList and suppliers of beta-Butyrolactone, (+)- will send you quotes. Your contact details stay private until you accept a quote.

What is the price of beta-Butyrolactone, (+)-?

Suppliers quote beta-Butyrolactone, (+)- 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 beta-Butyrolactone, (+)-

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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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