1,3-Diethylurea 4-04-00-00370 (Beilstein Handbook Reference) 623-76-7 BRN 1744741 EINECS 210-811-3 N,N'-Diethylurea NSC 429 UREA, 1,3-DIETHYL- Urea, N,N'-diethyl (9CI) sym-Diethylurea