n-methyl-3-piperidyl benzilate n-methyl-3-piperidyl benzilate n-methyl-3-piperidyl benzilate (jb-336 or lbj) is an anticholinergic drug related to the chemical warfare agent 3-quinuclidinyl benzilate. n-methyl-3-piperidyl benzilatelegal statuslegal status de: anlage i (authorized scientific use only) us: schedule i identifiers iupac name (1-methylpiperidin-3-yl) 2-hydroxy-2,2-di(phenyl)acetate cas number3321-80-0 ypubchem cid62495chemspider56274 yunii3a5hm769qxchemblchembl139948 ycomptox dashboard (epa)dtxsid2046258 echa infocard100.020.031 chemical and physical dataformulac20h23no3molar mass325.408 g·mol−13d model (jsmol)interactive image smiles o=c(oc1cccn(c)c1)c(o)(c2ccccc2)c3ccccc3 inchi inchi=1s/c20h23no3/c1-21-14-8-13-18(15-21)24-19(22)20(23,16-9-4-2-5-10-16)17-11-6-3-7-12-17/h2-7,9-12,18,23h,8,13-15h2,1h3 ykey:zbeilxwhvsvdbn-uhfffaoysa-n y (verify) n-methyl-3-piperidyl benzilate is less potent and shorter acting than 3-quinuclidyl benzilate, but like 3-qnb its effects on the central nervous system predominate over peripheral effects. it produces deliriant and hallucinogenic effects similar to those of plants such as datura and may be used recreationally at low doses; however, unpleasant side effects such as dysphoria, nausea and vomiting, dizziness and extreme dry mouth tend to make abuse of drugs of this kind uncommon. both the n-methyl and n-ethyl analogues of 3-piperidyl benzilate are, however, schedule i controlled drugs. radiolabelled versions of this drug are used in scientific research to map the distribution of muscarinic acetylcholine receptors in the brain. methylation of jb-336 gives the quat salt, mepenzolate bromide.