Frederick Sanger

Winning the Nobel Price for Chemistry is a remarkable feat. Winning it twice is almost unheard of, and definitely worthy of a place in the Top 10 Greatest Chemists of All Time. Frederick Sanger is one of only four people to have won two Nobel Prizes, and one of only two have done so in the same category. Sanger was awarded his first Nobel Prize in 1958 for his work on sequencing insulin. Prior to Sanger's research it was assuming that proteins were somewhat lacking a clearly defined shape or form. However, in determining the chemical sequencing of insulin, Sanger proved that proteins have a defined composition. A remarkable 22 years later, Sanger won his second Nobel Prize for Chemistry by applying this sequencing method to DNA.