1-?[2-?[Di(methyl-?d3)?amino]?-?1-?(4-?methoxyphenyl)?ethyl]?-cyclohexanol is an intermediate in the synthesis of D,L-O-Desmethyl Venlafaxine-d6 (D296503), the labeled analogue of D,L-O-Desmethyl Venlafaxine (D296500), a metabolite of Venlafaxine (V120000).