mercaptopurine

M3E1R1C3A1P3T1O1P3U1R1I1N1E1
UK/mɜːˌkap.tə(ʊ)ˈp(j)ʊə.ɹiːn/UK/mɜːˌkap.tə(ʊ)ˈpjɔː.ɹiːn/US/mɚˌkæp.təˈpjʊɹˌin/

noun

An thiol antimetabolite C₅H₄N₄S that interferes especially with the metabolism of purine bases and the biosynthesis of nucleic acids and that is sometimes used in the treatment of acute leukemia.

Similar
Purinethol
UncommonScrabble 22

Meanings

nounmercaptopurine (countable and uncountable, plural mercaptopurines)

plural mercaptopurines · alternative 6-mercaptopurine

  1. countableuncountablemedicineAn thiol antimetabolite C₅H₄N₄S that interferes especially with the metabolism of purine bases and the biosynthesis of nucleic acids and that is sometimes used in the treatment of acute leukemia.

Synonyms & antonyms

nouna drug (trade name Purinethol) that interferes with the metabolism of purine and is used to treat acute lymphocytic leukemia

Similar
Purinethol

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. LatinMercurius
  2. Latinmercurium
  3. Proto-Indo-European*kap-
  4. Proto-Indo-European*kapyéti
  5. Proto-Italic*kapjō
  6. Latincapiō
  7. Latincaptō
  8. Latincaptāns
  9. Latinmercurium captāns
  10. Englishmercapto-
  11. GermanPurin
  12. Englishpurine
  13. Englishmercaptopurine

From mercapto- + purine.

Full word history & related roots →
Cite this entry
APA

mercaptopurine. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/mercaptopurine

MLA

“mercaptopurine.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mercaptopurine. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “mercaptopurine,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/mercaptopurine.

Source: mercaptopurine on Wiktionary, CC BY-SA 4.0.