FLT3-IN-1 is primarily used in research settings to study and inhibit the FLT3 receptor tyrosine kinase, which plays a significant role in cell proliferation and survival. It is particularly valuable in investigating acute myeloid leukemia (AML), as mutations in the FLT3 gene are commonly associated with this type of cancer. Researchers use it to understand the mechanisms of FLT3 signaling pathways and to evaluate its potential as a therapeutic target. Additionally, FLT3-IN-1 aids in the development of novel cancer treatments by serving as a tool to test the efficacy of FLT3 inhibitors in preclinical studies. Its application extends to exploring drug resistance mechanisms and optimizing treatment strategies for FLT3-driven malignancies.