157309-18-7 1H-Purine-2,6-dione, 3,7-dihydro-7-(2-(cyclohexylmethylamino)ethyl)-1,3-dimethyl-, (R-(R*,R*))-2,3-dihydroxybutanedioate (1:1) 7-(2-(Cyclohexylmethylamino)ethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione tartrate 7-(2-(N-Methyl-N-cyclohexyl)aminoethyl)-1,3-dimethylxanthine tartrate