2-(p-Chlorobenzyl)-2-thiopseudourea hydrochloride 544-47-8 Carbamimidothioic acid, (4-chlorophenyl)methyl ester, monohydrochloride NSC176723 Pseudourea, 2-(p-chlorobenzyl)-2-thio-, monohydrochloride p-Chlorobenzylpseudothiuronium chloride