unifiram (developmental code name dm-235) is an experimental drug which has antiamnesic effects in animal studies and with significantly higher potency than piracetam. sunifiram is a molecular simplification of unifiram (dm-232). another analogue is sapunifiram (mn-19). as of 2016, sunifiram had not been subjected to toxicology testing, nor to any human clinical trials, and is not approved for use anywhere in the world.