Synonyms: 251-661-9;2-Amino-1,7-dihydro-6H-purin-6-one hydrochloride (1:1);2-Amino-1,9-dihydro-6H-purin-6-one chlorhydrate;2-Amino-1,9-dihydro-6H-purin-6-one hydrochloride;2-Amino-1,9-dihydro-6H-purin-6-one hydrochloride (1:1);2-Amino-1,9-dihydro-6H-purin-6-onhydrochlorid;2-Amino-9H-purin-6-ol hydrochloride (1:1);6H-purin-6-one, 2-amino-1,7-dihydro-, hydrochloride (1:1);6H-purin-6-one, 2-amino-1,9-dihydro-, hydrochloride (1:1);2-amino-3,7-dihydro-6H-purin-6-one hydrochloride (1:1);2-amino-3,5-dihydro-6H-purin-6-one