1-Phthalazinamine, N-(4-chlorophenyl)-4-(4-pyridinylmethyl)- 212141-54-3 CGP 79787 CGP-797870 N-(4-Chlorophenyl)-4-(4-pyridinylmethyl)-1-phthalazinamine PTK 787 PTK/ZK Vatalanib ZK-232934