Noun
English Wikipedia has an article on:acesulfameWikipedia
acesulfame (plural acesulfames)
Any of a class of synthetic noncaloric sweeteners, based on a oxathiazinone dioxide structure, somewhat similar to saccharin
Acesulfame potassium is a potassium salt of 6-methyl-1,2,3-oxathiazine-4(3H)-one 2,2-dioxide which is an artificial sweetener that is molecularly nothing like aspartame (which is a methly ester of aspartic acid). Source: Internet