1-(2-Piperidinyl)-1,2,3,4-tetrahydro-beta-carboline 1-(2-Piperidinyl)-2,3,4,9-tetrahydro-1H-pyrido(3,4-b)indole 132767-53-4 1H-Pyrido(3,4-b)indole, 2,3,4,9-tetrahydro-1-(2-piperidinyl)-