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Impurities and reference standards

Cyclocumarol

Also known as Cyclocoumarol, Cumopyran, Methanopyranorin

CAS 518-20-7Formula C20H18O4Molar mass 322.36 g/molEC 208-248-3
GHS signal word: Danger. Pictograms: Acute toxicity (severe)
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Cyclocumarol chemical structure, C20H18O4, CAS 518-20-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
518-20-7
Formula
C20H18O4
Molar mass
322.36 g/mol
EC number
208-248-3
HS code
293220
Category
Impurities and reference standards

What is Cyclocumarol?

Plain description, key identifiers and synonyms

Cyclocoumarol is a member of coumarins.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methoxy-2-methyl-4-phenyl-3,4-dihydropyrano[3,2-c]chromen-5-one
CAS number
518-20-7 CAS number cross-checked
EC number
208-248-3
Molecular formula
C20H18O4
UNII
725P8AW50M
MDL number
MFCD00078734
InChIKey
ZGFASEKBKWVCGP-UHFFFAOYSA-N
InChI
InChI=1S/C20H18O4/c1-20(22-2)12-15(13-8-4-3-5-9-13)17-18(24-20)14-10-6-7-11-16(14)23-19(17)21/h3-11,15H,12H2,1-2H3
SMILES (canonical and isomeric)
CC1(CC(C2=C(O1)C3=CC=CC=C3OC2=O)C4=CC=CC=C4)OC

Synonyms

  • Cyclocoumarol
  • Cumopyran
  • Methanopyranorin
  • 2-methoxy-2-methyl-4-phenyl-3,4-dihydropyrano[3,2-c]chromen-5-one
  • methopyranorin
  • 2-methoxy-2-methyl-4-phenyl-3,4-dihydropyrano(3,2-c)chromen-5-one
  • 3,4-Dihydro-2-methoxy-2-methyl-4-phenyl-2H,5H-pyrano-(3,2-c)(1)-benzopyran-5-one
  • Pyranocumarin
  • Cumopyrin
  • Anticoagulans 63
  • Compound 63 link
  • BL 5
  • 3,4-Dihydro-2-methoxy-2-methyl-4-phenyl-2H,5H-pyrano(3,2-c)(1)benzopyran-5-one
  • 3,4-Dihydro-2-methoxy-2-methyl-4-phenyl-2H,5H-pyrano[3,2-c][1]benzopyran-5-one
  • 2H,5H-Pyrano(3,2-c)(1)benzopyran-5-one, 3,4-dihydro-2-methoxy-2-methyl-4-phenyl-
  • 2H,5H-Pyrano[3,2-c][1]benzopyran-5-one, 3,4-dihydro-2-methoxy-2-methyl-4-phenyl-
  • anticoagulant No. 63
  • 2-Methyl-2-methoxy-4-phenyl-3,4-dihydro-pyrano-(3,2-c)-cumarin
  • Warfarin Sodium Impurity 37
  • 3,4-Dihydro-2-methoxy-2-methyl-4-phenylpyrano(3,2-c)chromen-5-one
  • 2H-Pyran-5-carboxylic acid, 3,4-dihydro-6-(o-hydroxyphenyl)-2-methoxy-2-methyl-4-phenyl-, delta-lactone
  • Pyranocoumarin, PESTANAL(R), analytical standard
  • 3,4-(2'-Methyl-2'-methoxy-4'-phenyl)dihydropyranocoumarin
  • 2-Methoxy-2-methyl-4-phenyl-3,4-dihydro-2H,5H-pyrano[3,2-c][1]benzopyran-5-one
  • 2-Methoxy-2-methyl-4-phenyl-3,4-dihydro-2H,5H-pyrano[3,2-c]chromen-5-one
Show all 26 synonyms
  • 2-Methoxy-2-methyl-4-phenyl-3,4-dihydro-2H,5H-pyrano[3,2-c]chromen-5-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
322.36 g/molcalc.
Exact mass
322.1205 Dacalc.
LogP (octanol/water)
4.07calc.
Topological polar surface area
48.67 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
24calc.
Rings
4calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.25calc.
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=c1oc2ccccc2c2c1C(c1ccccc1)CCO2

O=c1oc2ccccc2c2c1C(c1ccccc1)CCO2

4 rings, 21 atoms.

4 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H310Fatal in contact with skin.
Precautionary statements (10)
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • 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

Cyclocumarol suppliers

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Cyclocumarol 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

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

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: 3,4-Dihydro-2-methoxy-2-methyl-4-phenyl-2H,5H-pyrano[3,2-c]-[1]benzopyran-5-one (cyclocoumarol), Ref no: 234, Annex ref: II/234

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

Frequently asked questions

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

What is Cyclocumarol?

Cyclocoumarol is a member of coumarins.

What is the CAS number of Cyclocumarol?

The CAS registry number of Cyclocumarol is 518-20-7.

What is the molecular formula and weight of Cyclocumarol?

The molecular formula of Cyclocumarol is C20H18O4 and its molar mass is 322.36 g/mol.

Is Cyclocumarol hazardous?

Cyclocumarol carries the GHS signal word "Danger". Main hazards: fatal in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cyclocumarol?

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

Where can I buy Cyclocumarol?

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What is the price of Cyclocumarol?

Suppliers quote Cyclocumarol 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 Cyclocumarol

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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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