25i-nbmd 25i-nbmd 25i-nbmd (nbmd-2c-i, cimbi-29) is a derivative of the phenethylamine hallucinogen 2c-i, discovered in 2006 by a team at purdue university led by david nichols. it acts as a potent partial agonist for the 5ht2a receptor with a ki of 0.049 nm at the human 5ht2a receptor. the corresponding 4-bromo analogue 25b-nbmd has been used for molecular dynamics studies on the shape of the 5-ht2a receptor. 25i-nbmdlegal statuslegal status de: npsg (industrial and scientific use only) uk: class a identifiers iupac name n--2-(4-iodo-2,5-dimethoxyphenyl)ethan-1-amine cas number919797-25-4 npubchem cid57507899chemspider26234932 yuniir99110126kcomptox dashboard (epa)dtxsid70726967 chemical and physical dataformulac18h20ino4molar mass441.265 g·mol−13d model (jsmol)interactive image smiles c13ococ3cccc1cnccc(c(oc)cc2i)cc2oc inchi inchi=1s/c18h20ino4/c1-21-16-9-14(19)17(22-2)8-12(16)6-7-20-10-13-4-3-5-15-18(13)24-11-23-15/h3-5,8-9,20h,6-7,10-11h2,1-2h3 ykey:njnmipdeumtynv-uhfffaoysa-n y ny (what is this?) (verify) legality sweden the riksdag added 25i-nbmd to narcotic drugs punishments act under swedish schedule i ("substances, plant materials and fungi which normally do not have medical use") as of january 16, 2015, published by medical products agency (mpa) in regulation lvfs 2014:11 listed as 25i-nbmd, and 2-(4-jodo-2,5-dimetoxifenyl)-n-etanamin. united kingdom this substance is a class a drug in the united kingdom as a result of the n-benzylphenethylamine catch-all clause in the misuse of drugs act 1971. analogues and derivatives analogues and derivatives of 2c-i: 25i-nb*: 25i-nbf 25i-nbmd 25i-nb34md 25i-nboh 25i-nbome (nbome-2ci) 25i-nb3ome 25i-nb4ome n-(2c)-fentanyl: n-(2c-i) fentanyl