1-(3,4,5,6-Tetrahydrophthalimido)-2,3-dihydroxypropane-d5 is the isotope analog of 1-(3,4,5,6-Tetrahydrophthalimido)-2,3-dihydroxypropane. 1-(3,4,5,6-Tetrahydrophthalimido)-2,3-dihydroxypropane is used in the preparation of carbapenem compounds as antibacterials.