The title compound, 5-hy-droxy-N,N,N-tri-methyl-tryptammonium (5-HTQ) iodide {systematic name: [2-(5-hy-droxy-1H-indol-3-yl)eth-yl]tri-methyl-aza-nium iodide}, C13H19N2O+·I-, has a single tryptammonium cation and one iodide anion in the asymmetric unit. The ions are held together by N-H⋯I and O-H⋯I hydrogen bonds in infinite chains along [100].
Keywords: crystal structure; hydrogen bonding; indoles; natural product; tryptamines.
© Pham et al. 2021.