ro 04-6790 ro 04-6790 ro 04-6790 is a drug, developed by hoffmann–la roche, which has applications in scientific research. it acts as a potent and selective receptor antagonist for the 5-ht6 serotonin receptor subtype, with little or no affinity at other receptors. in common with other drugs of this class, ro 04-6790 has nootropic effects in animals, and reduces the amnesia produced by memory-impairing drugs such as dizocilpine and scopolamine. ro 04-6790clinical dataatc codenoneidentifiers iupac name 4-amino-n--benzenesulfonamide cas number202466-68-0pubchem cid5312145iuphar/bps274chemspider4471575chemblchembl433461chemical and physical dataformulac12h16n6o2smolar mass308.36 g·mol−13d model (jsmol)interactive image smiles nc2ccc(cc2)s(=o)(=o)nc1cc(nc)nc(nc)n1 inchi inchi=1s/c12h16n6o2s/c1-14-10-7-11(17-12(15-2)16-10)18-21(19,20)9-5-3-8(13)4-6-9/h3-7h,13h2,1-2h3,(h3,14,15,16,17,18)key:jelfwsxqtxrmaj-uhfffaoysa-n (verify)