thisdrug what a medicine's name tells you

WHO naming stem · anywhere in the name · 33 listed names

estr

estrogens

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

All 33 names WHO lists under estr

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. almestrone
  2. benzestrol
  3. broparestrol
  4. cloxestradiol
  5. dienestrol
  6. diethylstilbestrol
  7. epiestriol
  8. epimestrol
  9. estradiol
  10. estradiol benzoate
  11. estradiol undecylate
  12. estradiol valerate
  13. estramustine
  14. estrapronicate
  15. estrazinol
  16. estriol succinate
  17. estrofurate
  18. estrone
  19. ethinylestradiol
  20. fenestrel
  21. fosfestrol
  22. furostilbestrol
  23. hexestrol
  24. mestranol
  25. methallenestril
  26. methestrol
  27. moxestrol
  28. nilestriol
  29. orestrate
  30. polyestradiol phosphate
  31. promestriene
  32. quinestradol
  33. quinestrol

Decode another name

Decoded

estrone

Listed INNCarries the WHO stem estr

  • estrstart of the nameWHO lists it hereWHO definition: estrogens

“estrone” is an INN that WHO lists under estr 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 estr (Part II B) and the 33 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.