piperidines tertiary amine 1-[3-(4-tert-butylphenyl)-2-methylpropyl]piperidine chebi_ontology CHEBI:83291 A member of the class of piperidines that is <em>N</em>-isobutylpiperidine in which a hydrogen of one of the methyl groups is replaced by a <em>p</em>-<em>tert</em>-butylphenyl group. 1-(3-(4-(1,1-dimethylethyl)phenyl)-2-methylpropyl)piperidine