1H-Purine-2,6-dione, 3,7-dihydro-7-(5,6-dihydroxyhexyl)-3-ethyl-1-methyl- 3,7-Dihydro-7-(5,6-dihydroxyhexyl)-3-ethyl-1-methyl-1H-purine-2,6-dione 86257-19-4