Friedrich August Kekule is a 19th century German chemist known for his contributions to the study of organic chemistry. Some synonyms that can be used to refer to him include "Kekule von Stradonitz", "Friedrich Kekule", or simply "Kekule". He is best known for his theory of chemical structure, which proposed that carbon atoms can form chains that make up organic molecules. Kekule's research and teachings had a profound impact on the field of chemistry, and he remains an important figure in the history of science. His legacy continues to inspire chemists and scientists around the world.