Heinrich Dreser 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...

, responsible for the aspirin

Aspirin

Aspirin , also known as acetylsalicylic acid , is a salicylate drug, often used as an analgesic to relieve minor aches and pains, as an antipyretic to reduce fever, and as an anti-inflammatory medication. It was discovered by Arthur Eichengrun, a chemist with the German company Bayer...

 and heroin projects at Bayer AG

Bayer

Bayer AG is a chemical and pharmaceutical company founded in Barmen , Germany in 1863. It is headquartered in Leverkusen, North Rhine-Westphalia, Germany and well known for its original brand of aspirin.-History:...

. He was a key factor in the creation of the widely used modern drug, Codeine. On December 21, 1924, Dreser died of a stroke.

Arthur Eichengrün

Arthur Eichengrün

Arthur Eichengrün was a German chemist, best known through a controversy about who invented aspirin.- Life :Arthur Eichengrün was born in Aachen as the son of a Jewish cloth merchant and manufacturer...

claimed that the credit (and profits) for the discovery of aspirin were stolen from him by Dreser. This however, has not been proven.http://www.trescrow.com/history.htm#Jan9