1,1'-Ethylenebis(3-(2-(amidinothio)ethyl)urea) dihydrochloride 40481-86-5 Carbamimidothioic acid, 1,2-ethanediylbis(iminocarbonylimino-2,1-ethanediyl) ester, dihydrochloride (9CI) NSC 521155 Pseudourea, 2,2'-ethylenebis((2-(ureylene)ethyl)thio)di-, dihydrochloride USAF PD-34 Urea, 1,1'-ethylenebis(3-(2-(amidino)thio)ethyl-, dihydrochloride