1-Phenyl-3,3-bis(4-pyridinylmethyl)-2-indolinone 105431-72-9 2H-Indol-2-one, 1,3-dihydro-1-phenyl-3,3-bis(4-pyridinylmethyl)- Dup 996 Linopirdine Linopirdine [USAN:INN]