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In the US, Temsirolimus (temsirolimus systemic) is a member of the drug class mTOR inhibitors and is used to treat Renal Cell Carcinoma.

US matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Antineoplastic agent: Immunosuppressant

Chemical Names

(1R,2R,4S)-4-{(2R)-2-[(3S,6R,7E,9R,10R,12R,14S,15E,17E,19E,21S,23S,26R,27R,34aS)-9,27-Dihydroxy-10,21-dimetoxy-6,8,12,14,20,26-hexametyl-1,5,11,28,29-pentaoxo-1,4,5,6,9,10,11,12,13,14,21,22,23,24,25,26,27,28,29,31,32,33,34,34a-tetracosahydro-3H-23,27-epox (WHO)

Rapamycin 42-(2,2-bis(hydroxymetyl)propionate)

Rapamycin, 42-(3-hydroxy-2-(hydroxymetyl)-2-metylpropanoate)

Foreign Names

  • Temserolimusum (Latin)
  • Temserolimus (German)
  • Temsirolimus (French)

Generic Names

  • Temsirolimus (OS: BAN, USAN, JAN)
  • CCl-779 (IS)
  • NSC-683864 (IS: WyethAyerst)
  • WAY-CCl 779 (IS)

Brand Names

  • Torisel
    Pfizer, Argentina; Pfizer, Austria; Pfizer, Australia; Pfizer, Belgium; Pfizer, Canada; Pfizer, Switzerland; Pfizer, Czech Republic; Pfizer, Germany; Pfizer, Denmark; Pfizer, Finland; Pfizer, France; Pfizer, United Kingdom; Pfizer, Greece; Pfizer, Hong Kong; Pfizer, Croatia (Hrvatska); Pfizer, Hungary; Pfizer, Ireland; Pfizer, Iceland; Pfizer, South Korea; Pfizer, Malaysia; Pfizer, Netherlands; Pfizer, Norway; Pfizer, Philippines; Pfizer, Poland; Pfizer, Portugal; Pfizer, Sweden; Pfizer, Singapore; Pfizer, Slovakia; Pfizer, Thailand; Pfizer, Turkey; Pfizer, Taiwan; Pfizer, South Africa; Pfizer Italia, Italy; Pfizer Japan, Japan; Pfizer Luxembourg, Bosnia & Herzegowina; Wyeth, Chile; Wyeth, Spain; Wyeth, Israel; Wyeth, Romania; Wyeth, Serbia; Wyeth Medica, Lithuania; Wyeth, Inc., United States


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

Click for further information on drug naming conventions and 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.