Synonyms: Pyrazinecarboxamide,3,5-diamino-N-(aminoiminomethyl)-6-chloro-, monohydrochloride, dihydrate (9CI);Pyrazinecarboxamide, N-amidino-3,5-diamino-6-chloro-, monohydrochloride,dihydrate (8CI);N-Amidino-3,5-diamino-6-chloropyrazinamide hydrochloridedihydrate;2-Pyrazinecarboxamide,3,5-diamino-N-(aminoiminomethyl)-6-chloro-, hydrochloride, hydrate (1:1:2);