In order to provide an agent for the prevention and/or treatment of Trk-related diseases, the present invention provides a compound that has selective inhibitory activity on Trk, persistently suppresses NGF vascular hyperpermeability, has no drug interactions, and also has exceptional absorbability and solubility in free bases. The compound of the present invention has selective inhibitory activity on Trk, persistently suppresses NGF vascular hyperpermeability, has no drug interactions, and has exceptional absorbability and solubility in free bases, and is therefore useful as a drug for the prevention and/or treatment of Trk-related diseases.
