4-HO-NALT
4-HO-NALT, also known as 4-hydroxy-N-allyltryptamine, is a tryptamine derivative developed by modification of norpsilocin. It produces a head-twitch response in mice consistent with psychedelic-like activity, as do the corresponding ethyl, propyl, isopropyl, and benzyl derivatives, but the bulkier t-butyl and cyclohexyl derivatives are inactive.
Image:4-HO-NET, 4-HO-NPT, 4-HO-NiPT & 4-HO-NBnT structure.png|250px|thumb|left|class=skin-invert-image|4-HO-NET, 4-HO-NPT, 4-HO-NiPT, and 4-HO-NBnT.