TRK-IN-18 is a potent inhibitor of TRK. Tropomyosin-related kinases (Trks) are a family of receptor tyrosine kinases activated by neurotrophins, a group of soluble growth factors including Nerve Growth Factor (NGF), Brain-Derived Neurotrophic Factor (BDNF) and Neurotrophin-3 (NT-3) and Neurotrophin-4/5 ( NT-4/5 ). TRK-IN-18 has the potential for the research of cancer diseases (extracted from patent WO2021148805A1, compound 7).