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WHO naming stem · anywhere in the name · 37 listed names

fos

insecticides, anthelminthics, pesticides etc., phosphorous derivatives

WHO's definition, quoted as written in the 2024 stem book
Names only. This page is about fos 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 fos, without hyphens, which means it can sit anywhere in a name. So the letters fos sit anywhere in the name (fos).

All 37 names WHO lists under fos

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. fosalvudine tidoxil
  2. fosamprenavir
  3. fosaprepitant
  4. fosarilate
  5. fosazepam
  6. fosbretabulin
  7. foscarnet sodium
  8. fosclevudine alafenamide
  9. foscolic acid
  10. fosdagrocorat
  11. fosdevirine
  12. fosenazide
  13. fosfestrol
  14. fosfluconazole
  15. fosfluridine tidoxil
  16. fosfocreatinine
  17. fosfomycin
  18. fosfonet sodium
  19. fosfosal
  20. fosfructose
  21. fosinopril
  22. fosinoprilat
  23. foslevcromakalim
  24. fosmanogepix
  25. fosmenic acid
  26. fosmetpentotenane
  27. fosmidomycin
  28. fosopamine
  29. fosphenytoin
  30. fospirate
  31. fospropofol
  32. fosquidone
  33. fosravuconazone
  34. fostamatinib
  35. fostedil
  36. fostriecin
  37. fosveset

Decode another name

Decoded

fosfosal

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

  • fosstart of the nameWHO lists it hereWHO definition: insecticides, anthelminthics, pesticides etc., phosphorous derivatives
  • salend of the nameWHO lists it hereWHO definition: salicylic acid derivatives

“fosfosal” is an INN that WHO lists under fos, sal 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 fos (Part II B) and the 37 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.