Lavendustin B is primarily used in biochemical and pharmacological research due to its inhibitory activity against specific protein kinases. It has been studied for its potential to interfere with signal transduction pathways involved in cell growth and inflammation. Researchers use Lavendustin B as a tool compound to probe the roles of tyrosine kinases in cellular processes, particularly in studies related to cancer development and immune responses. Its selectivity makes it valuable in identifying kinase-dependent mechanisms, although it is not used clinically due to stability and toxicity concerns.