5-meo-eipt 5-meo-eipt 5-meo eipt is a psychedelic of the tryptamine class that has been sold online as a designer drug. 5-meo-eiptlegal statuslegal status de: npsg (industrial and scientific use only) uk: class a identifiers iupac name n-ethyl-5-methoxy-n-(1-methylethyl)-1h-indole-3-ethanamine cas number850032-66-5 ypubchem cid53485366chemspider30798626unii5m8ht6uv7bcomptox dashboard (epa)dtxsid70704548 chemical and physical dataformulac16h24n2omolar mass260.381 g·mol−13d model (jsmol)interactive image smiles cc(c)n(cc)ccc1=cnc2=cc=c(oc)c=c21 inchi inchi=1s/c16h24n2o/c1-5-18(12(2)3)9-8-13-11-17-16-7-6-14(19-4)10-15(13)16/h6-7,10-12,17h,5,8-9h2,1-4h3key:vveqxdhsgnbflz-uhfffaoysa-n legality 5-meo-eipt is illegal in japan. 5-meo-eipt is illegal in italy. sweden's public health agency suggested classifying 5-meo-eipt as a hazardous substance, on may 15, 2019.