1,3-Dimethyl-4,5-diphenyl-2[(2-oxopropyl)thio]imidazolium . trifluorosulfonic acid salt

1,3-Dimethyl-4,5-diphenyl-2-[(2-oxopropyl)thio]imidazolium, trifluorosulfonicacid salt is a potent, active site directed inhibitor. The reaction results in an acetonylation of active site cysteine. The inhibition parameters were obtained by progress curve analysis using a continuous assay after preincuabation with the inhibitor.