when was aspirin invented

Aspirin was first synthesized in a pure and stable form by Bayer chemist Felix Hoffmann in 1897. The drug was then marketed under the name "Aspirin" by Bayer, with the brand name officially registered in 1899. The synthesis of acetylsalicylic acid, the active component of aspirin, marked the beginning of its modern history, although the use of willow bark (a natural source of salicin, a precursor of aspirin) for pain relief dates back thousands of years to ancient civilizations like the Sumerians and Egyptians.