Hydroxydiethyltryptamine (hydroxy-DET or HO-DET) may refer to:
4-Hydroxy-N,N-diethyltryptamine (4-hydroxy-DET; 4-HO-DET; ethocin) 5-Hydroxy-N,N-diethyltryptamine (5-hydroxy-DET; 5-HO-DET) 6-Hydroxy-N,N-diethyltryptamine (6-hydroxy-DET; 6-HO-DET)
See also Substituted tryptamine Methoxydiethyltryptamine (methoxy-DET) Hydroxydimethyltryptamine (hydroxy-DMT) Methoxydimethyltryptamine (methoxy-DMT) Fluorodiethyltryptamine (fluoro-DET)