1 FI4 (2s)-1-{[3-(2-chlorophenyl)-6-(2,4-difluorophenoxy)-1h-pyrazolo[3,4-D]pyrimidin-4-yl]amino}propan-2-ol 1.000 2 FL4 6-(2,4-difluorophenoxy)-3-(2-methylphenyl)-1h-pyrazolo[3,4-D]pyrimidine 0.774 3 FKN 3-[2-chloro-5-(methylsulfonyl)phenyl]-6-(2,4-difluorophenoxy)-1h-pyrazolo[3,4-D]pyrimidine 0.735