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CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Adjunct to antineoplastic therapy

Chemical Names

5-chloro-2,4-dihydroxypyridine (JAN)

5-chloro-2,4-pyridinediol (WHO)

Foreign Names

  • Gimeracilum (Latin)
  • Gimeracil (German)
  • Giméracil (French)
  • Gimeracilo (Spanish)

Generic Names

  • Gimeracil (OS: JAN, BAN)
  • Gimestat (IS)
  • UNII-UA8SE1325T (IS)

Brand Names

  • Ai Yi (Gimeracil and Tegafur; Oteracil)
    Hengrui, China
  • ESUEEW AN T (Gimeracil and Oteracil, + Tegafur)
    Sawai Seiyaku, Japan
  • NKS-1 T (Gimeracil and Oteracil, + Tegafur)
    Nippon Kayaku, Japan
  • S-1 (Gimeracil and Tegafur; Oteracil)
    Taiho, China
  • Teysuno (Gimeracil and Tegafur, + Oteracil)
    Nordic Drugs, Finland; Nordic Drugs, Norway; Nordic Drugs, Sweden; Nordic Group, Austria; Nordic Pharma, Germany; Nordic Pharma, United Kingdom; Nordic Pharma, Hungary; Nordic Pharma, Italy; Taiho, Spain
  • Teysuno (Gimeracil and Tegafur, + Thiamazole)
    Nordic Pharma, Slovakia
  • TS-1 OD T (Gimeracil and Oteracil, + Tegafur)
    Toho Yakuhin, Japan
  • TS-1 T (Gimeracil and Oteracil, + Tegafur)
    Toho Yakuhin, Japan
  • TS-ONE (Gimeracil and Oteracil, + Tegafur)
    Taiho, Singapore; Taiho, Thailand
  • TS-One (Gimeracil andTegafur, + Oteracil)
    Taiho, Hong Kong


BANBritish Approved Name
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
WHOWorld Health Organization

Further information on drug naming conventions: International Nonproprietary Names.

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Further information

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