The molecule is the conjugate acid of (S)-6-hydroxynicotine; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a (S)-6-hydroxynicotine. It is an enantiomer of a (R)-6-hydroxynicotinium.
5-[(2S)-1-methylpyrrolidin-1-ium-2-yl]-1H-pyridin-2-one