Robert R. Williams Scientist
Robert Runnels Williams (February 16, 1886 – October 2, 1965) was an American chemist, known for being the first to synthesize thiamine (vitamin B1). He first isolated thiamine in 1933, and synthesized vitamin B in 1935. Among his awards were the Elliott Cresson Medal in 1940 and the Perkin Medal in 1947. His brother was Roger J. Williams, another important chemist at the time and discoverer of Vitamin B5.