25h-nbome 25h-nbome 25h-nbome (nbome-2c-h) is a derivative of the phenethylamine hallucinogen 2c-h, which acts as a highly potent partial agonist for the human 5-ht2a receptor. 25h-nbomeclinical dataatc codenonelegal statuslegal status de: npsg (industrial and scientific use only) uk: class a identifiers iupac name 2-(2,5-dimethoxyphenyl)-n-ethanamine cas number919797-16-3 ypubchem cid39424372chemspider25511924 yuniirn5zvn74y9chemical and physical dataformulac18h23no3molar mass301.386 g·mol−13d model (jsmol)interactive image smiles coc1=cc(=c(c=c1)oc)ccncc2=cc=cc=c2oc inchi inchi=1s/c18h23no3/c1-20-16-8-9-18(22-3)14(12-16)10-11-19-13-15-6-4-5-7-17(15)21-2/h4-9,12,19h,10-11,13h2,1-3h3key:rmlxcdmtgwseou-uhfffaoysa-n legality sweden the riksdag added 25h-nbome to narcotic drugs punishments act under swedish schedule i ("substances, plant materials and fungi which normally do not have medical use") as of august 1, 2013, published by medical products agency (mpa) in regulation lvfs 2013:15 listed as 25h-nbome, and 2-(2,5-dimetoxifenyl)-n-(2-metoxibensyl)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.