1-(2,4-Diketo-1,3-dimethyl-1,2,3,4-tetrahydropyrimidin-6-yl)-3-propylurea 1-Propyl-3-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-4-pyrimidinyl)urea 31652-51-4 Urea, 1-propyl-3-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-4-pyrimidinyl)-