diphemanil metilsulfate diphemanil metilsulfate in the field of pharmacology, diphemanil metilsulfate also known as diphemanil methylsulfate is an antimuscarinic (an agent that blocks the action of the natural neurotransmitter acetylcholine). diphemanil metilsulfateclinical dataatc codea03ab15 (who) identifiers iupac name 4-(diphenylmethylene)-1,1-dimethylpiperidinium methylsulfate cas number62-97-5 y 15394-62-4 (diphemanil cation)pubchem cid6126drugbankdb00729 ychemspider5896 yuniiw2zg23mgyichebichebi:59782 ychemblchembl1200880 ncomptox dashboard (epa)dtxsid9022948 echa infocard100.000.503 chemical and physical dataformulac21h27no4smolar mass389.51 g·mol−13d model (jsmol)interactive image smiles s(=o)(=o)oc.c3c(\c(=c1/cc(c)(c)cc1)c2ccccc2)cccc3 inchi inchi=1s/c20h24n.ch4o4s/c1-21(2)15-13-19(14-16-21)20(17-9-5-3-6-10-17)18-11-7-4-8-12-18;1-5-6(2,3)4/h3-12h,13-16h2,1-2h3;1h3,(h,2,3,4)/q+1;/p-1 ykey:bremlqbskcsnnh-uhfffaoysa-m y ny (what is this?) (verify)