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Heterocyclic building blocks

Coumane

Also known as Benzo(b)cyclopropa(d)pyran-2(1aH)-one, 1,7b-dihydro-, 2-(2-Hydroxyphenyl) cyclopropanecarboxylic delta-lactone, Cyclopropanecarboxylic acid, 2-(2-hydroxyphenyl)-, delta-lactone

CAS 5617-64-1Formula C10H8O2Molar mass 160.17 g/mol
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Coumane chemical structure, C10H8O2, CAS 5617-64-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5617-64-1
Formula
C10H8O2
Molar mass
160.17 g/mol
HS code
293220
Category
Heterocyclic building blocks

What is Coumane?

Plain description, key identifiers and synonyms

Coumane is a chemical substance with the molecular formula C10H8O2 and a molar mass of 160.17 g/mol. Its CAS registry number is 5617-64-1. The IUPAC name is (1aR,7bS)-1a,7b-dihydro-1H-cyclopropa[c]chromen-2-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1aR,7bS)-1a,7b-dihydro-1H-cyclopropa[c]chromen-2-one
CAS number
5617-64-1 CAS number cross-checked
Molecular formula
C10H8O2
UNII
9GH194GRKB
InChIKey
BSNSPNHWEMGXBT-HTQZYQBOSA-N
InChI
InChI=1S/C10H8O2/c11-10-8-5-7(8)6-3-1-2-4-9(6)12-10/h1-4,7-8H,5H2/t7-,8-/m1/s1
Canonical SMILES
O=C1Oc2ccccc2C2CC12
Isomeric SMILES
C1[C@H]2[C@@H]1C(=O)OC3=CC=CC=C23

Synonyms

  • Benzo(b)cyclopropa(d)pyran-2(1aH)-one, 1,7b-dihydro-
  • 2-(2-Hydroxyphenyl) cyclopropanecarboxylic delta-lactone
  • Cyclopropanecarboxylic acid, 2-(2-hydroxyphenyl)-, delta-lactone
  • 2-(2-Hydroxyphenyl)cyclopropanecarboxylic acid delta-lactone
  • (+-)-Coumane
  • Coumane, (+-)-
  • Cyclopropylcoumarin
  • (+/-)-coumane
  • Coumane, (+/-)-
  • (1aR,7bS)-1a,7b-Dihydrocyclopropa[c][1]benzopyran-2(1H)-one
  • 2-(2-Hydroxyphenyl) cyclopropanecarboxylic acid delta lactone

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
160.17 g/molcalc.
Exact mass
160.0524 Dacalc.
LogP (octanol/water)
1.71calc.
Topological polar surface area
26.3 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
12calc.
Rings
3calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.3calc.
Formal charge
0calc.
Stereocentres
2calc.
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=C1Oc2ccccc2C2CC12

O=C1Oc2ccccc2C2CC12

3 rings, 12 atoms.

No other chemical in our database has 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.

Coumane suppliers

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Coumane 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

Functional uses

  • Flavouring and nutrient

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 Coumane 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 Coumane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Coumane, based on the data on this page

What is Coumane?

Coumane is a chemical substance with the molecular formula C10H8O2 and a molar mass of 160.17 g/mol. Its CAS registry number is 5617-64-1. The IUPAC name is (1aR,7bS)-1a,7b-dihydro-1H-cyclopropa[c]chromen-2-one.

What is the CAS number of Coumane?

The CAS registry number of Coumane is 5617-64-1.

What is the molecular formula and weight of Coumane?

The molecular formula of Coumane is C10H8O2 and its molar mass is 160.17 g/mol.

What is Coumane used for?

Known uses and roles of Coumane include building blocks in research and laboratory, screening compounds in research and laboratory and flavouring and nutrient.

Is Coumane hazardous?

No GHS hazard classification for Coumane 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 Coumane?

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

Where can I buy Coumane?

Post a free request on CompoundList and suppliers of Coumane will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Coumane?

Suppliers quote Coumane 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 Coumane

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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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