Answer
Gerhard Domagk was a German scientist who discovered the antibiotic sulfanilamide in 1932. In 1927, he was working at the IG Farben branch at Elberfeld, Germany. He had been studying the effects of sulfonamides on bacteria, and he discovered that they were effective in killing certain types of bacteria. This discovery led to the development of sulfa drugs, which were used to treat a variety of infections.