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Heterocyclic building blocks

Flavoteben

Also known as p-Oxyberon, N'-(4-hydroxybenzylidene)isonicotinohydrazide, N'-[(E)-(4-hydroxyphenyl)methylidene]pyridine-4-carbohydrazide

CAS 840-81-3Formula C13H11N3O2Molar mass 241.25 g/molEC 661-165-8
GHS signal word: Warning. Pictograms: Harmful or irritant 2 suppliers listed
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Flavoteben chemical structure, C13H11N3O2, CAS 840-81-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
840-81-3
Formula
C13H11N3O2
Molar mass
241.25 g/mol
EC number
661-165-8
HS code
293339
Category
Heterocyclic building blocks

What is Flavoteben?

Plain description, key identifiers and synonyms

Flavoteben is a chemical substance with the molecular formula C13H11N3O2 and a molar mass of 241.25 g/mol. Its CAS registry number is 840-81-3. The IUPAC name is N-[(E)-(4-hydroxyphenyl)methylideneamino]pyridine-4-carboxamide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-[(E)-(4-hydroxyphenyl)methylideneamino]pyridine-4-carboxamide
CAS number
840-81-3 CAS number cross-checked
EC number
661-165-8
Molecular formula
C13H11N3O2
InChIKey
MXEBNXXQDJLMTC-OQLLNIDSSA-N
InChI
InChI=1S/C13H11N3O2/c17-12-3-1-10(2-4-12)9-15-16-13(18)11-5-7-14-8-6-11/h1-9,17H,(H,16,18)/b15-9+
Canonical SMILES
O=C(NN=Cc1ccc(O)cc1)c1ccncc1
Isomeric SMILES
C1=CC(=CC=C1/C=N/NC(=O)C2=CC=NC=C2)O

Synonyms

  • p-Oxyberon
  • N'-(4-hydroxybenzylidene)isonicotinohydrazide
  • N'-[(E)-(4-hydroxyphenyl)methylidene]pyridine-4-carbohydrazide
  • (E)-N'-(4-hydroxybenzylidene)isonicotinohydrazide
  • INH 4OHPhCHO de
  • p-Hydroxybenzalisonicotinic acid, hydrazone
  • 4-Hydroxybenzaldehyde isonicotinoyl hydrazone
  • Isonicotinic acid, (p-hydroxybenzylidene)hydrazide
  • 4-Pyridinecarboxylic acid, [(4-hydroxyphenyl)methylene]hydrazide
  • Isonicotinoyl-p-hydroxybenzalhydrazone
  • N'-[(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]pyridine-4-carbohydrazide
  • p-Hydroxybenzaldehyde isonicotinoylhydrazone
  • N'-[(1E)-(4-hydroxyphenyl)methylene]isonicotinohydrazide
  • N'-[(E)-(4-hydroxyphenyl)methylidene]isonicotinohydrazide
  • N-[(1E)-2-(4-hydroxyphenyl)-1-azavinyl]-4-pyridylcarboxamide
  • N-[(E)-(4-hydroxyphenyl)methyleneamino]pyridine-4-carboxamide

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
241.25 g/molcalc.
Exact mass
241.0851 Dacalc.
LogP (octanol/water)
1.55calc.
Topological polar surface area
74.58 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
3calc.
Heavy atoms
18calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
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=C(NN=Cc1ccccc1)c1ccncc1

O=C(NN=Cc1ccccc1)c1ccncc1

2 rings, 17 atoms.

117 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

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

Flavoteben suppliers

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

All 2 suppliers
  • ChemBridge Corporation
    United States, San DiegoUnclaimed profile
    FlavotebenGrade, purity and minimum order on request
    Price on request
    View
  • ChemDiv Inc.
    United States, San DiegoUnclaimed profile
    FlavotebenGrade, purity and minimum order on request
    Price on request
    View

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 1 country

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

Frequently asked questions

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

What is Flavoteben?

Flavoteben is a chemical substance with the molecular formula C13H11N3O2 and a molar mass of 241.25 g/mol. Its CAS registry number is 840-81-3. The IUPAC name is N-[(E)-(4-hydroxyphenyl)methylideneamino]pyridine-4-carboxamide.

What is the CAS number of Flavoteben?

The CAS registry number of Flavoteben is 840-81-3.

What is the molecular formula and weight of Flavoteben?

The molecular formula of Flavoteben is C13H11N3O2 and its molar mass is 241.25 g/mol.

What is Flavoteben used for?

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

Is Flavoteben hazardous?

Flavoteben carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Flavoteben?

Flavoteben 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 Flavoteben?

CompoundList lists 2 suppliers of Flavoteben in 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 Flavoteben?

Suppliers quote Flavoteben on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

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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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