2-Phenylindole is widely used in organic synthesis as a building block for the creation of more complex molecules. It serves as a key intermediate in the production of pharmaceuticals, particularly in the development of compounds with potential anti-inflammatory and anticancer properties. Its structure allows it to interact with biological targets, making it valuable in medicinal chemistry research. Additionally, 2-Phenylindole is utilized in the synthesis of dyes and pigments due to its ability to form stable, colored compounds. It also finds application in material science, where it is incorporated into organic electronic materials for use in devices like OLEDs (organic light-emitting diodes). Its versatility in various chemical reactions makes it a valuable compound in both industrial and academic settings.