25c-nbf 25c-nbf 25c-nbf (2c-c-nbf, nbf-2c-c) is a derivative of the phenethylamine hallucinogen 2c-c, which acts as a highly potent partial agonist for the human 5-ht2a receptor. 25c-nbfclinical dataatc codenonelegal statuslegal status de: npsg (industrial and scientific use only) uk: class a identifierscas number1539266-21-1 ychemspider32055558 yuniitf5jw72any legality sweden the riksdag added 25c-nbf to narcotic drugs punishments act under swedish schedule i ("substances, plant materials and fungi which normally do not have medical use") as of january 26, 2016, published by medical products agency (mpa) in regulation hslf-fs 2015:35 listed as 25c-nbf, and 2-(4-kloro-2,5-dimetoxifenyl)-n-(2-fluorobensyl)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-c: 25c-nb*: 25c-nbf 25c-nbmd 25c-nboh 25c-nbome (nbome-2cc) 25c-nb3ome 25c-nb4ome n-(2c)-fentanyl: n-(2c-c)-fentanyl