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Screening compounds

EF-24

Also known as (3E,5E)-3,5-Bis((2-fluorophenyl)methylene)-4-piperidinone, 4-Piperidinone, 3,5-bis((2-fluorophenyl)methylene)-, (3E,5E)-, 3,5-Bis[(2-fluorophenyl)methylene]-4-piperidinone

CAS 917813-75-3Formula C19H15F2NOMolar mass 311.33 g/molEC 686-985-3
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 2 suppliers listed
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EF-24 chemical structure, C19H15F2NO, CAS 917813-75-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
917813-75-3
Formula
C19H15F2NO
Molar mass
311.33 g/mol
EC number
686-985-3
HS code
293339
Category
Screening compounds

What is EF-24?

Plain description, key identifiers and synonyms

EF-24 is a chemical substance with the molecular formula C19H15F2NO and a molar mass of 311.33 g/mol. Its CAS registry number is 917813-75-3. The IUPAC name is (3E,5E)-3,5-bis[(2-fluorophenyl)methylidene]piperidin-4-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(3E,5E)-3,5-bis[(2-fluorophenyl)methylidene]piperidin-4-one
CAS number
917813-75-3Other or deprecated CAS: 342808-40-6
EC number
686-985-3
Molecular formula
C19H15F2NO
UNII
O5YT36MST0
MDL number
MFCD08560185
InChIKey
NIVYQYSNRUIFIF-KAVGSWPWSA-N
InChI
InChI=1S/C19H15F2NO/c20-17-7-3-1-5-13(17)9-15-11-22-12-16(19(15)23)10-14-6-2-4-8-18(14)21/h1-10,22H,11-12H2/b15-9+,16-10+
Canonical SMILES
O=C1C(=Cc2ccccc2F)CNCC1=Cc1ccccc1F
Isomeric SMILES
C\1NC/C(=C\C2=CC=CC=C2F)/C(=O)/C1=C/C3=CC=CC=C3F

Synonyms

  • (3E,5E)-3,5-Bis((2-fluorophenyl)methylene)-4-piperidinone
  • 4-Piperidinone, 3,5-bis((2-fluorophenyl)methylene)-, (3E,5E)-
  • 3,5-Bis[(2-fluorophenyl)methylene]-4-piperidinone
  • 3,5-bis(2-fluorobenzylidene)piperidin-4-one
  • 3,5-Bis((2-fluorophenyl)methylene)-4-piperidinone
  • 3,5-bis(2-flurobenzylidene) piperidin-4-one
  • (3E,5E)-3,5-bis[(2-fluorophenyl)methylidene]piperidin-4-one
  • EF-24, >=98% (HPLC)
  • (3e,5e)-3,5-bis(2-fluorobenzylidene)piperidin-4-one
  • (3E,5E)-3,5-bis[(2-fluorophenyl)methylene]piperidin-4-one
  • 4-Piperidinone, 3,5-bis[(2-fluorophenyl)methylene]-, acetate, (3E,5E)-

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
311.33 g/molcalc.
Exact mass
311.1122 Dacalc.
LogP (octanol/water)
3.6calc.
Topological polar surface area
29.1 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
23calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.11calc.
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, O=C1C(=Cc2ccccc2)CNCC1=Cc1ccccc1

O=C1C(=Cc2ccccc2)CNCC1=Cc1ccccc1

3 rings, 21 atoms, the 3,5-Bis(benzylidene)-4-piperidone ring system.

72 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
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H400Very toxic to aquatic life.
Precautionary statements (7)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • P391Collect spillage.
  • 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

EF-24 suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 2 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

2 suppliers in 2 countries

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EF-24 price

Indicative price range per kg from live supplier offers

No published prices right now

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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 EF-24 is traded under.

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for EF-24 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about EF-24, based on the data on this page

What is EF-24?

EF-24 is a chemical substance with the molecular formula C19H15F2NO and a molar mass of 311.33 g/mol. Its CAS registry number is 917813-75-3. The IUPAC name is (3E,5E)-3,5-bis[(2-fluorophenyl)methylidene]piperidin-4-one.

What is the CAS number of EF-24?

The CAS registry number of EF-24 is 917813-75-3. Other or deprecated CAS numbers: 342808-40-6.

What is the molecular formula and weight of EF-24?

The molecular formula of EF-24 is C19H15F2NO and its molar mass is 311.33 g/mol.

What is EF-24 used for?

Known uses and roles of EF-24 include building blocks in research and laboratory and screening compounds in research and laboratory.

Is EF-24 hazardous?

EF-24 carries the GHS signal word "Warning". Main hazards: harmful if swallowed, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of EF-24?

EF-24 is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy EF-24?

CompoundList lists 2 suppliers of EF-24 in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of EF-24?

Suppliers quote EF-24 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 EF-24

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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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