Felix Hoffman

Felix Hoffmann, who synthesized aspirin and heroin.

Felix Hoffman was a German chemist, most notably famous for his development of aspirin for the first time in both a chemically stable, as well as pure state, whilst working at Bayer's, and controversially

The development of heroin. The substance had been previously synthesized before, in 1874 England, however, Bayer sold heroin up until the 1930s as a pain relief medication before research into the addictive nature of heroin was conducted and reviewed.