Also Called: 7-[3-[[2-(3,5-dihydroxyphenyl)-2-hydroxyethyl]amino]propyl]-3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione monohydrochloride;7-[3-[[2-(3,5-Dihydroxyphenyl)-2-hydroxyethyl]-amino]propyl]-3,7-dihydro-1,3-dimethyl-1H-purin-2,6-dionmonohydrochlorid