Adolf von Baeyer is credited with discovering indole.
Indole was first isolated in the mid-nineteenth century during research related to indigo dye. German chemist Adolf von Baeyer identified indole through a reaction involving indigo, sulfuric acid, and sulfuric anhydride. This discovery marked a significant step in understanding the chemical structure and properties of indole, a heterocyclic aromatic organic compound widely found in nature.
