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WHO naming stem · anywhere in the name · 41 listed names

trop

atropine derivatives

WHO's definition, quoted as written in the 2024 stem book
Names only. This page is about trop as a part of a name. It has nothing on uses, doses, side effects or interactions of any medicine that carries it, and nothing here is medical advice. Ask a pharmacist or doctor about the medicine itself.

Where it sits in a name

WHO writes the stem as trop, without hyphens, which means it can sit anywhere in a name. So the letters trop sit anywhere in the name (trop).

All 41 names WHO lists under trop

These are the INN in group (a) of Part IV of the stem book: names in which WHO says the stem is used as defined. The stem is marked where WHO places it. A-Z as WHO lists them.

  1. atropine methonitrate
  2. atropine oxyde
  3. benzatropine
  4. butropium bromide
  5. ciclotropium bromide
  6. cimetropium bromide
  7. clobenztropine
  8. cyheptropine
  9. darotropium bromide
  10. decitropine
  11. deptropine
  12. esbatropate
  13. etybenzatropine
  14. eucatropine
  15. flutropium bromide
  16. homatropine methylbromide
  17. ilmetropium iodine
  18. ipratropium bromide
  19. octatropine methylbromide
  20. oxitropium bromide
  21. phenactropinium chloride
  22. revatropate
  23. ritropirronium bromide
  24. sevitropium mesilate
  25. sintropium bromide
  26. sultroponium
  27. tematropium metilsulfate
  28. tiotropium bromide
  29. tipetropium bromide
  30. tropabazate
  31. tropanserin
  32. tropantiol
  33. tropapride
  34. tropatepine
  35. tropenziline bromide
  36. tropicamide
  37. tropigline
  38. tropirine
  39. tropisetron
  40. tropodifene
  41. xenytropium bromide

Decode another name

Decoded

deptropine

Listed INNCarries 2 WHO stems, most specific first: trop …

  • tropinside the nameWHO lists it hereWHO definition: atropine derivatives
  • -pin(e)end of the nameWHO definition: tricyclic compounds

“deptropine” is an INN that WHO lists under trop in the 2024 stem book.

The same decoder as the front page: it reads the letters of a name against all 482 WHO stems, in your browser.

Source and licence

The definition of trop (Part II B) and the 41 names (Part IV, group (a)) are from Use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances, 2024 (World Health Organization, Stem book 2024 (ISBN 978-92-4-009938-8); covers proposed INN Lists 1-129). Checked .

Adapted from: Use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances, 2024. Geneva: World Health Organization; 2024. Licence: CC BY-NC-SA 3.0 IGO. This adaptation was not created by WHO; WHO is not responsible for its content or accuracy and does not endorse this site. The data file stems.json is shared under the same licence.