2-(3'-Dimethylaminopropylthio)pseudourea dihydrochloride 2-(3-Dimethylaminopropyl)-2-thiopseudourea dihydrochloride 23256-33-9 65119-89-3 Carbamimidothioic acid, 3-(dimethylamino)propyl ester, dihydrocloride (9CI) Diamaprit-2HCl Dimaprit hydrochloride Pseudourea, 2-(3-(dimethylamino)propyl)-2-thio-, dihydrochloride USAF PD-40