(S)-Salsolinol ((-)-Salsolinol) is a dopamine-derived endogenous metabolite[1].
References:
[1]. Musshoff F, et al. Determination of dopamine and dopamine-derived (R)-/(S)-salsolinol and norsalsolinol in various human brain areas using solid-phase extraction and gas chromatography/mass spectrometry. Forensic Sci Int. 2000 Sep 11;113(1-3):359-66.
















