Compounds of several other structural families, including the quinoxaline AG1296, the bis(1H-2-indolyl)-1-methanone << D-65476 >>, the indolinones SU5416 and SU11248, the indolocarbazoles PKC412 and CEP-701, and the piperazonyl quinazoline CT53518, are potent inhibitors of Flt3 [[ kinase ]].