0-13-00-00137 (Beilstein Handbook Reference) 1-Methyl-2,4-phenylene bis-1,1'-(2-thiourea) 1519-71-7 BRN 2380614 N,N''-(4-Methyl-1,3-phenylene)bisthiourea USAF K-1571 Urea, 1,3-(4-methyl-1,3-phenylene)bis(2-thio-