Step 1 : Introduction to the question "By what name is acetylsalicylic acid more commonly known?"
Aspirin, also known as acetylsalicylic acid, is the most common drug in household medicine cabinets. Acetylsalicylic acid was originally made from a chemical found in the bark of willow trees. In 1897, Bayer employee Felix Hoffmann found a way to create a stable form of the drug that was easier and more pleasant to take. After obtaining the patent rights, Bayer began distributing aspirin in powder form to physicians to give to their patients. The brand name came from “a” for acetyl, “spir” from the spirea plant (a source of salicin) and the suffix “in,” commonly used for medications. It quickly became the number-one drug worldwide.