BW A-533U

4-[(2,3,6,7-Tetrahydro-1,3-dimethyl-2,6-dioxo-1H-purin)-8-yl]benzoic acid

4-[(1,3-Dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin)-8-yl]benzoic acid