Synonyms: Acridine,9-amino-1,2,3,4-tetrahydro- (7CI,8CI); Acridine, 9-aminotetrahydro- (6CI);1,2,3,4-Tetrahydro-9-acridinamine; 1,2,3,4-Tetrahydro-9-aminoacridine;9-Amino-1,2,3,4-tetrahydroacridine; THA; Tacrine; Tetrahydroaminacrine;Tetrahydroaminocrin; Tetrahydroaminocrine