telenzepine telenzepine telenzepine is a thienobenzodiazepine acting as selective m1 antimuscarinic. it is used in the treatment of peptic ulcers. telenzepine is atropisomeric, in other words the molecule has a stereogenic c–n-axis. in neutral aqueous solution it displays a half-life for racemization of the order of 1000 years. the enantiomers have been resolved. the activity is related to the (+)-isomer which is about 500-fold more active than the (–)-isomer at muscarinic receptors in the rat cerebral cortex. telenzepineclinical dataatc codenoneidentifiers iupac name 1-methyl-10--5h-thienobenzodiazepin-4-one cas number80880-90-6pubchem cid5387chemspider5194unii0990eg3k10chemblchembl253978comptox dashboard (epa)dtxsid5045209 chemical and physical dataformulac19h22n4o2smolar mass370.47 g·mol−13d model (jsmol)interactive image smiles c1cn(c)ccn1cc(=o)n2c3ccccc3nc(=o)c4csc(c)c42 inchi inchi=1s/c19h22n4o2s/c1-13-18-14(12-26-13)19(25)20-15-5-3-4-6-16(15)23(18)17(24)11-22-9-7-21(2)8-10-22/h3-6,12h,7-11h2,1-2h3,(h,20,25)key:vswpgaiwkhptkx-uhfffaoysa-n