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Heterocyclic building blocks

Koenine

Also known as Kenine, 3,11-Dihydro-3,3,5-trimethylpyrano[3,2-a]carbazol-8-ol, mk279

CAS 28200-63-7Formula C18H17NO2Molar mass 279.34 g/mol
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Koenine chemical structure, C18H17NO2, CAS 28200-63-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
28200-63-7
Formula
C18H17NO2
Molar mass
279.34 g/mol
HS code
293499
Category
Heterocyclic building blocks

What is Koenine?

Plain description, key identifiers and synonyms

Koenine is a member of carbazoles.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3,3,5-trimethyl-11H-pyrano[3,2-a]carbazol-8-ol
CAS number
28200-63-7
Molecular formula
C18H17NO2
UNII
T9B5DU7GNZ
InChIKey
VISKLVOLGCYFCW-UHFFFAOYSA-N
InChI
InChI=1S/C18H17NO2/c1-10-8-14-13-9-11(20)4-5-15(13)19-16(14)12-6-7-18(2,3)21-17(10)12/h4-9,19-20H,1-3H3
SMILES (canonical and isomeric)
CC1=CC2=C(C3=C1OC(C=C3)(C)C)NC4=C2C=C(C=C4)O

Synonyms

  • Kenine
  • 3,11-Dihydro-3,3,5-trimethylpyrano[3,2-a]carbazol-8-ol
  • mk279
  • 3,3,5-trimethyl-11H-pyrano[3,2-a]carbazol-8-ol
  • 3,3,5-Trimethyl-3,11-dihydropyrano[3,2-a]carbazol-8-ol
  • Pyrano[3,2-a]carbazol-8-ol, 3,11-dihydro-3,3,5-trimethyl-
  • 3,11-Dihydro-3,3,5-trimethylpyrano[3,2-a]carbazol-8-ol, 9CI
  • 5,5,8-trimethyl-6-oxa-17-azatetracyclo[8.7.0.0^{2,7}.0^{11,16}]heptadeca-1,3,7,9,11,13,15-heptaen-13-ol

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
279.34 g/molcalc.
Exact mass
279.1259 Dacalc.
LogP (octanol/water)
4.52calc.
Topological polar surface area
45.25 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
21calc.
Rings
4calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.22calc.
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, C1=Cc2c(ccc3c2[nH]c2ccccc23)OC1

C1=Cc2c(ccc3c2[nH]c2ccccc23)OC1

4 rings, 17 atoms.

24 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.

Koenine suppliers

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Koenine 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 Koenine is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Koenine?

Koenine is a member of carbazoles.

What is the CAS number of Koenine?

The CAS registry number of Koenine is 28200-63-7.

What is the molecular formula and weight of Koenine?

The molecular formula of Koenine is C18H17NO2 and its molar mass is 279.34 g/mol.

What is Koenine used for?

Known uses and roles of Koenine include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Koenine hazardous?

No GHS hazard classification for Koenine 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 Koenine?

Koenine is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Koenine?

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

What is the price of Koenine?

Suppliers quote Koenine 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 Koenine

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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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