5-Methyldihydro-4H-1,3,5-dithiazine

dihydro-5-methyl-4H-1,3,5-dithiazine

5-Methyl-5,6-dihydro-4H-1,3,5-dithiazine

5,6-dihydro-5-methyl-4H-1,3,5-dithiazine