Fentanyl was first synthesized by Belgian chemist Paul Janssen in 1959. He synthesized the drug at a pharmaceutical company he started in Belgium.
Source: Stolberg, V. B. (2016). Painkillers. History, Science, and Issues. ABC-Clio.
| Drugs: | Opium (morphine, heroin, opioids) |
|---|---|
| Regions: | Belgium |
