1-Benzyl-spiro(1,2,3,4-tetrahydronaphthalene-1,4-piperidine) 3,4-Dihydro-1'-(phenylmethyl)spiro(naphthalene-1(2H),4'-piperidine) 95417-67-7 L 687384 L-687,384 L-687384 Spiro(naphthalene-1(2H),4'-piperidine), 3,4-dihydro-1'-(phenylmethyl)-