afdx-384 afdx-384 afdx-384 (bibn-161) is a drug which acts as a selective antagonist of the muscarinic acetylcholine receptors, with selectivity for the m2 and m4 subtypes. it is used mainly for mapping the distribution of m2 and m4 muscarinic receptors in the brain, and studying their involvement in the development and treatment of dementia and schizophrenia. afdx-384identifiers iupac name n-(2-piperidin-1-yl]ethyl)-6-oxo-5h-pyridobenzodiazepine-11-carboxamide cas number118290-27-0 ypubchem cid119357chemspider26233613 ychebichebi:73338 ncomptox dashboard (epa)dtxsid60922653 chemical and physical dataformulac27h38n6o2molar mass478.641 g·mol−13d model (jsmol)interactive image smiles o=c1nc2cccnc2n(c4c1cccc4)c(=o)nccn3ccccc3cn(ccc)ccc inchi inchi=1s/c27h38n6o2/c1-3-16-31(17-4-2)20-21-10-7-8-18-32(21)19-15-29-27(35)33-24-13-6-5-11-22(24)26(34)30-23-12-9-14-28-25(23)33/h5-6,9,11-14,21h,3-4,7-8,10,15-20h2,1-2h3,(h,29,35)(h,30,34)/t21-/m1/s1 ykey:mzdyabxxpznuct-oaqylsrusa-n y ny (what is this?) (verify)