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(2007/10/02)1,8-dimethyl-2-phenyl-6H-imidazo<1,2-f>xanthine
2,4-Dichloro-8-methyl-7-phenylimidazo<1,2-f>purine
4-Mercapto-2-chloro-8-methyl-7-phenylimidazo<1,2-f>purine
2-Chloro-8-methyl-7-phenylimidazo<1,2-f>purin-4-on
4-Amino-2-chloro-8-methyl-7-phenylimidazo<1,2-f>purine