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.