PROBLEM TO BE SOLVED: To provide inhibitors of fatty acid amide hydrolase (FAAH) being endogenous membrane protein contributing to hydrolysis of endogenous neuromodulating fatty acid amides (FAAs).SOLUTION: There is provided a crystalline compound represented by the formula (1) or an anhydrous trimer of a compound represented by the formula (1).SELECTED DRAWING: Figure 1
FATTY ACID AMIDE HYDROLASE INHIBITORS