1,2-Benzisothiazol-3(2H)-one, 2-methyl-, 1,1-dioxide 1,2-Benzisothiazolin-3-one, 2-methyl-, 1,1-dioxide 15448-99-4 2-Methyl-1,2-benzisothiazole-3(2H)-one-1,1-dioxide N-Methylsaccharin NSC39120