117018-92-5 2-(2-Oxo-1-pyrrolidinyl)ethyl carbamimidothioate hydrochloride Carbamimidothioic acid, 2-(2-oxo-1-pyrrolidinyl)ethyl ester, monohydrochloride N-(S-beta-(Isothiuroniaethyl))-2-pyrrolidone hydrochloride