Used as a key scaffold in the development of kinase inhibitors for cancer therapy. Found in pharmaceuticals targeting tyrosine kinases, which play critical roles in tumor growth and progression. Also applied in research for inflammatory diseases and autoimmune disorders due to its ability to modulate signaling pathways. Serves as a purine mimetic, interfering with ATP binding sites in enzymes involved in cell proliferation. Widely explored in medicinal chemistry for designing selective inhibitors with improved potency and reduced side effects.