1,2,3,4-Tetrahydro-N,N-dipropyl-2-naphthalenamine 2-(di-n-Propylamino)tetralin 23853-59-0 N,N-Dipropyl-2-amino-1,2,3,4-tetrahydronaphthalene N,N-Dipropyl-2-aminotetralin TL 68 TL-68