Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors and anticancer drugs. Its structure serves as a scaffold for compounds targeting tyrosine kinases, which play critical roles in signal transduction pathways associated with tumor growth. Also explored in the design of antimicrobial and anti-inflammatory agents due to its ability to interact with biological targets involved in infection and inflammation. Commonly modified at the 3rd and 8th positions to enhance potency, selectivity, and pharmacokinetic properties in drug candidates.