18144-21-3 2-(2-(Dimethylamino)ethyl)-1-phenyl-2-thio-pseudourea dihydrobromide 2-(Dimethylaminoethyl)-N'-phenylisothiuronium bromide hydrobromide Pseudourea, 2-(2-(dimethylamino)ethyl)-1-phenyl-2-thio-, dihydrobromide