1,4:3,6-dianhydro-2,5-di-O-methyl-D-glucitol; 2,5- di-O-methyl-1,4:3,6-dianhydro-D-glucitol; R)-4,8- dimethoxy-2,6-dioxabicyclo[3.3.0]octane; 2,5- dimethylisosorbide; iso sorbidedimethylether CAS NO:5306-85-4