hexocyclium hexocyclium hexocyclium is an antimuscarinic. it is used in the form of its methyl sulfate, called hexocyclium metilsulfate. hexocycliumclinical dataatc codea03ab10 (who) identifiers iupac name 4-(2-cyclohexyl-2-hydroxy-2-phenylethyl)-1,1-dimethylpiperazin-1-ium cas number6004-98-4pubchem cid24199iuphar/bps323chemspider22621uniill3147pi1tchemblchembl1201325chemical and physical dataformulac20h33n2omolar mass317.497 g·mol−13d model (jsmol)interactive image smiles c1(ccn(cc1)cc(c2ccccc2)(c3=cc=cc=c3)o)c inchi inchi=1s/c20h33n2o/c1-22(2)15-13-21(14-16-22)17-20(23,18-9-5-3-6-10-18)19-11-7-4-8-12-19/h3,5-6,9-10,19,23h,4,7-8,11-17h2,1-2h3/q+1key:zryhpqchhoksmd-uhfffaoysa-n