pnu-22394 pnu-22394 pnu-22394 is a drug which acts as an agonist at serotonin 5-ht2 receptors, with strongest binding affinity for 5-ht2a and 5-ht2c and slightly weaker at 5-ht2b, although it is only a full agonist at 5-ht2c, but partial agonist at 5-ht2a and 5-ht2b. it has anorectic effects in both animal studies and human trials, along with "pro-cognitive properties", although it has never been developed for medical use. pnu-22394identifiers iupac name 6-methyl-1,2,3,4,5,6-hexahydro-azepinoindole cas number15923-78-1 ypubchem cid27559chemspider25649 nuniij7hpj854eachemblchembl6557 nchemical and physical dataformulac13h16n2molar mass200.285 g·mol−13d model (jsmol)interactive image smiles c3cnccc2c3c1ccccc1n2c inchi inchi=1s/c13h16n2/c1-15-12-5-3-2-4-10(12)11-6-8-14-9-7-13(11)15/h2-5,14h,6-9h2,1h3 nkey:zbxdoqwpgbisar-uhfffaoysa-n n ny (what is this?) (verify)