2-(2-(Dimethylamino)ethyl)-1,3,3-trimethyl-2-thiopseudourea dihydrobromide 99799-60-7 Pseudourea, 2-(2-(dimethylamino)ethyl)-1,3,3-trimethyl-2-thio-, dihydrobromide S,2-Dimethylaminoethyl-1',3',3'-trimethylisothiuronium bromide hydrobromide