1-(2,4-Diketo-1,3-dimethyl-1,2,3,4-tetrahydropyrimidin-6-yl)-3-ethylurea hydrate 1-Ethyl-3-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-4-pyrimidinyl)urea hydrate 31652-49-0 Uracil, 1,3-dimethyl-5-(ethylurea)-, hydrate Urea, 1-ethyl-3-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-4-pyrimidinyl)-, hydrate