Helmut Zahn was a German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 chemist

Chemist

A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

 who is often credited as the first to synthesised Insulin

Insulin

Insulin is a hormone central to regulating carbohydrate and fat metabolism in the body. Insulin causes cells in the liver, muscle, and fat tissue to take up glucose from the blood, storing it as glycogen in the liver and muscle....

 in 1963. His results synthesizing insulin were achieved almost simultaneously with that of Panayotis Katsoyannis

Panayotis Katsoyannis

Panayotis G. Katsoyannis is a noted biochemist who is often credited with being the first to synthesize insulin while leading a team at the University of Pittsburgh in the early 1960s. His results synthesizing insulin were achieved almost simultaneously with that of Helmut Zahn at RWTH Aachen...

 at the University of Pittsburgh

University of Pittsburgh

The University of Pittsburgh, commonly referred to as Pitt, is a state-related research university located in Pittsburgh, Pennsylvania, United States. Founded as Pittsburgh Academy in 1787 on what was then the American frontier, Pitt is one of the oldest continuously chartered institutions of...

. His work was not honoured by the Nobel prize

Nobel Prize

The Nobel Prizes are annual international awards bestowed by Scandinavian committees in recognition of cultural and scientific advances. The will of the Swedish chemist Alfred Nobel, the inventor of dynamite, established the prizes in 1895...

 because in 1958 Frederick Sanger

Frederick Sanger

Frederick Sanger, OM, CH, CBE, FRS is an English biochemist and a two-time Nobel laureate in chemistry, the only person to have been so. In 1958 he was awarded a Nobel prize in chemistry "for his work on the structure of proteins, especially that of insulin"...

 was the first who discovered the chemical structure of Insulin.

Helmut Zahn studied chemistry at the University of Karlsruhe (TH) and received PhD in 1940. He habilitated at the University of Heidelberg and became director of the Deutsches Wollforschungsinstitut at the RWTH Aachen

RWTH Aachen

RWTH Aachen University is a research university located in Aachen, North Rhine-Westphalia, Germany with roughly 33,000 students enrolled in 101 study programs....

University in 1952.