3,7-dimethyl-1-(4-carboxybutyl)xanthine;1H-Purine-1-pentanoic acid,2,3,6,7-tetrahydro-3,7-dimethyl-2,6-dioxo;1-(4'-Carboxybutyl)-3,7-dimethylxanthine;pentoxifylline;CB-Dmx;3,7-dimethyl-1-(5-oxohexyl)-3,7-dihydro-purine-2,6-dione;5-(3,7-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-purin-1-yl)-pentanoic acid;1-(4-Carboxybutyl)-3,7-dimethylxanthin