Add Spectra ( Help ). From Wikipedia Ethocybin ( CEY-19 ; 4-phosphoryloxy-DET; 4-PO-DET) is a homologue of the mushroom alkaloid psilocybin , and a semi-synthetic psychedelic alkaloid of the tryptamine family. Effects of ethocybin are comparable to those of a shorter LSD or psilocybin , although intensity and duration vary depending