... Name: 1,3-Dimethylurea (DMU)Synonyms: N,N'-Dimethylurea; symmetric Dimethylurea, N,N'-Dimethylharnstoff (German); Urea, 1,3-dimethyl-; DMU; 1,3-Dimetilurea (Spanish); 1 ... a catalyst for condensation of methylamine with urea. 1,3-Dimethyl urea; N,N-Dimethyl urea