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Heterocyclic building blocks

Tegafur

Also known as Ftorafur, Futraful, Sinoflurol

CAS 17902-23-7Formula C8H9FN2O3Molar mass 200.17 g/molEC 241-846-2
GHS signal word: Danger. Pictograms: Acute toxicity (severe) 97 suppliers listed
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Tegafur chemical structure, C8H9FN2O3, CAS 17902-23-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
17902-23-7
Formula
C8H9FN2O3
Molar mass
200.17 g/mol
EC number
241-846-2
HS code
293499
Category
Heterocyclic building blocks

What is Tegafur?

Plain description, key identifiers and synonyms

Tegafur is an organohalogen compound and a member of pyrimidines.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5-fluoro-1-(oxolan-2-yl)pyrimidine-2,4-dione
CAS number
17902-23-7 CAS number cross-checkedOther or deprecated CAS: 37076-68-9, 79107-97-4, 82294-77-7
EC number
241-846-2
Molecular formula
C8H9FN2O3
UNII
1548R74NSZ
MDL number
MFCD00012351
InChIKey
WFWLQNSHRPWKFK-UHFFFAOYSA-N
InChI
InChI=1S/C8H9FN2O3/c9-5-4-11(6-2-1-3-14-6)8(13)10-7(5)12/h4,6H,1-3H2,(H,10,12,13)
SMILES (canonical and isomeric)
C1CC(OC1)N2C=C(C(=O)NC2=O)F

Synonyms

  • Ftorafur
  • Futraful
  • Sinoflurol
  • Fental
  • Neberk
  • Citofur
  • Lamar
  • Lifril
  • Coparogin
  • Furafluor
  • Furofutran
  • Nitobanil
  • Exonal
  • Fulfeel
  • Tefsiel C
  • Riol
  • Florafur
  • Franrose
  • Sunfural
  • Fulaid
  • 5-fluoro-1-(oxolan-2-yl)pyrimidine-2,4-dione
  • Atillon
  • Tegafurum
  • 1-(2-Tetrahydrofuryl)-5-fluorouracil
  • 2,4(1H,3H)-Pyrimidinedione, 5-fluoro-1-(tetrahydro-2-furanyl)-
Show all 38 synonyms
  • Uracil, 5-fluoro-1-(tetrahydro-2-furyl)-
  • 5-Fluoro-1-(tetrahydro-2-furanyl)-2,4-pyrimidinedione
  • 5-fluoro-1-tetrahydrofuran-2-yl-pyrimidine-2,4-dione
  • TS-1 component tegafur
  • N1-(2'-Tetrahydrofuryl)-5-fluorouracil
  • Teysuno component tegafur
  • N1-(2'-Furanidyl)-5-fluorouracil
  • 5-fluoro-1-(tetrahydro-2-furyl)-uracil
  • 5-Fluoro-1-(tetrahydro-2-furanyl)-2,4(1H,3H)-pyrimidinedione
  • Tefsiel
  • Ftoralon
  • Ftoral
  • Utefos

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
200.17 g/molcalc.
Exact mass
200.0597 Dacalc.
LogP (octanol/water)
-0.02calc.
Topological polar surface area
64.09 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
14calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
1calc.
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=c1ccn(C2CCCO2)c(=O)[nH]1

O=c1ccn(C2CCCO2)c(=O)[nH]1

2 rings, 13 atoms, the Tetrahydrofuryluracil ring system.

3,051 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

  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H331Toxic if inhaled.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • 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.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all 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

Tegafur suppliers

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

All 97 suppliers
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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

97 suppliers in 15 countries

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Tegafur 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

Pharmacological actions

  • Antimetabolites, Antineoplastic

Roles

  • antineoplastic agent
  • pharmaceutical
  • protective agent
  • renoprotective agent

Pharmacology

Tegafur is a congener of the antimetabolite fluorouracil with antineoplastic activity. Tegafur is a prodrug that is gradually converted to fluorouracil in the liver by the cytochrome P-450 enzyme. Subsequently, 5-FU is metabolized to two active metabolites, 5-fluoro-2-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP) by both tumor cells and normal cells. FdUMP inhibits DNA synthesis and cell division by inhibiting thymidylate synthase and reducing normal thymidine production, while FUTP inhibits RNA and protein synthesis by competing with uridine triphosphate. (NCI04)

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

Frequently asked questions

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

What is Tegafur?

Tegafur is an organohalogen compound and a member of pyrimidines.

What is the CAS number of Tegafur?

The CAS registry number of Tegafur is 17902-23-7. Other or deprecated CAS numbers: 37076-68-9, 79107-97-4, 82294-77-7.

What is the molecular formula and weight of Tegafur?

The molecular formula of Tegafur is C8H9FN2O3 and its molar mass is 200.17 g/mol.

What is Tegafur used for?

Known uses and roles of Tegafur include building blocks in research and laboratory, screening compounds in research and laboratory, antineoplastic agent, pharmaceutical, protective agent and 2 more.

Is Tegafur hazardous?

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

What is the HS code of Tegafur?

Tegafur 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 Tegafur?

CompoundList lists 97 suppliers of Tegafur in United States, China, Germany, United Kingdom and 11 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Tegafur in India?

2 suppliers in India list Tegafur on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Tegafur?

Suppliers quote Tegafur 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 Tegafur

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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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