AG126 is primarily used in research settings for its inhibitory effects on tyrosine kinases, particularly those involved in cell signaling pathways related to inflammation and cancer progression. It has been investigated for its potential to suppress the activation of mitogen-activated protein kinases (MAPKs), making it a valuable tool in studying cellular responses to stress and growth signals. Due to its ability to modulate signaling cascades, AG126 is employed in preclinical studies exploring therapeutic strategies for tumors and inflammatory diseases. It also serves as a reference compound in assays designed to screen new kinase inhibitors. Its application remains confined to laboratory research, with no current clinical use in medicine.