2,4-Diiminothiazolidine hydrochloride 2-Amino-4-imino-2-thiazoline hydrochloride 2-Amino-4-iminothiazoline hydrochloride 2-Thiazolamine, 4,5-dihydro-4-imino-, monohydrochloride 36518-76-0 EINECS 253-083-2 NSC 111157