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Ibritumomab Tiuxetan



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Anti-CD20 monoclonal antibody

Radiopharmaceutical for antineoplastic therapy

Chemical Name

Immunoglobulin G1, anti-(human CD20 (antigen)) (mouse monoclonal IDEC-Y2B8 gamma1-chain), disulfide wit mouse monoclonal IDEC-Y2B8 kappa 63-chain, dimer, N-[2-bis-(carboxymetyl)amino]-3-(4-isotiocyanatophenyl)propyl]-N-[2-[bis(carboxymetyl)- amino]propyl] (WHO)

Foreign Names

  • Ibritumomabum Tiuxetanum (Latin)
  • Ibritumomab Tiuxetan (German)
  • Ibritumomab Tiuxétan (French)
  • Ibritumomab Tiuxetán (Spanish)

Generic Names

Brand Names

  • Maasol
    GE Healthcare, Italy
  • Zevalin
    Bayer, Canada; Bayer, Spain; Bayer, Hong Kong; Bayer, Croatia (Hrvatska); Bayer, Italy; Bayer, Portugal; Bayer, Turkey; Bayer Schering, Lithuania; Bayer Schering, South Africa; Spectrum, Belgium; Spectrum, United States; Spectrum Pharmaceuticals, Austria; Spectrum Pharmaceuticals, Germany; Spectrum Pharmaceuticals, Hungary; Spectrum Pharmaceuticals, Netherlands; Spectrum Pharmaceuticals, Norway; Spectrum Pharmaceuticals, Poland; Spectrum Pharmaceuticals Cayman L.P, Israel; Target, Switzerland
  • Zevalin Yttrium
    Bayer Yakuhin, Japan
  • Zevamab
    Bayer, Colombia


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

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

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