N,N-Dimethyl-5-(phenylmethoxy)-1H-indole-3-ethan-α,α,β,β-d4-amine is an intermediate in the synthesis of Bufotenine-d4 Hydrochloride (B689467), which is labelled bufotenine Hydrochloride (B689465) which is a weak hallucinogenic agent active by intravenous injection. It is a constituent of toad poison.