has role pyridines pyrrolidine alkaloid antidepressant N-alkylpyrrolidine biomarker (-)-cotinine HMDB:HMDB0001046 Wikipedia:Cotinine LINCS:LSM-5986 (S)-(-)-Cotinine KNApSAcK:C00034470 MetaCyc:CPD-2742 cotinine cotinina CHEBI:68641 (5S)-1-methyl-5-(pyridin-3-yl)pyrrolidin-2-one (S)-Cotinine An N-alkylpyrrolidine that consists of N-methylpyrrolidinone bearing a pyridin-3-yl substituent at position C-5 (the 5S-enantiomer). It is an alkaloid commonly found in Nicotiana tabacum. (S)-1-Methyl-5-(3-pyridinyl)-2-pyrrolidinone cotininum pyrrolidin-2-ones plant metabolite human xenobiotic metabolite