car-302,282 car-302,282 car-302,282 (302282, nsc-263548, α-(3-methylbut-1-yn-3-enyl)mandelic acid 1-methyl-4-piperidyl ester) is an anticholinergic deliriant drug, invented under contract to edgewood arsenal in the 1960s. it is a potent incapacitating agent with an ed50 of 1.2μg/kg and a high central to peripheral effects ratio, and a relatively short duration of action compared to other similar drugs of around 6-10 hours. despite its favorable properties it was relatively little researched compared to more high profile compounds from the series such as ea-3167 and ea-3580. car-302,282identifiers iupac name (1-methylpiperidin-4-yl) 2-hydroxy-5-methyl-2-phenylhex-5-en-3-ynoate cas number62869-67-4pubchem cid44183chemspider40202chemblchembl1988426chemical and physical dataformulac19h23no3molar mass313.397 g·mol−13d model (jsmol)interactive image smiles cc(=c)c#cc(c1=cc=cc=c1)(c(=o)oc2ccn(cc2)c)o inchi inchi=1s/c19h23no3/c1-15(2)9-12-19(22,16-7-5-4-6-8-16)18(21)23-17-10-13-20(3)14-11-17/h4-8,17,22h,1,10-11,13-14h2,2-3h3key:hnfsqqpbchyzke-uhfffaoysa-n