... 202-498-7 Chemical Name: 1,3-Dimethylurea (DMU)Synonyms: N,N'-Dimethylurea; symmetric Dimethylurea, N,N'-Dimethylharnstoff (German); Urea, 1 ... alloxan and dihydroxyfumarate exposure. Methyl amine and 1,3-dimethylurea are hydrolysis products of methyl isocyanate. It is used ... in manufacturing synthetic caffeine, resins and drugs. 1,3-Dimethylurea is used as a catalyst for condensation of methylamine ...