1-Piperidinebutyronitrile, 4-methyl-alpha-(1-methylethyl)-alpha-2-thienyl- 4-Methyl-alpha-(1-methylethyl)-alpha-2-thienyl-1-piperidinebutanenitrile 64647-42-3 Isopropyl-2 (methyl-4' piperidinyl-1')-4 (thienyl-2'')-2 butyronitrile [French]