S-Ethylthiuronium bromide1071-37-031 % similar Ethyl acetimidate hydrochloride2208-07-331 % similar Guanidine hydrochloride-hexamethylenediamine copolymer57028-96-331 % similar Ethylamine hydrochloride557-66-430 % similar 2,2'-Azobis(2-methylpropanimidamide) dihydrochloride2997-92-430 % similar