6-(2,6-dichlorophenyl)-8-methyl-2-[(3-methylsulfanylphenyl)amino]pyrido[6,5-d]pyrimidin-7-one 6-(2,6-dichlorophenyl)-8-methyl-2-[[3-(methylthio)phenyl]amino]-7-pyrido[6,5-d]pyrimidinone 6-(2,6-dichlorophenyl)-8-methyl-2-[[3-(methylthio)phenyl]amino]pyrido[6,5-d]pyrimidin-7-one 6-(2,6-DICHLORO-PHENYL)-8-METHYL-2-(3-METHYLSULFANYL-PHENYLAMINO)-8H-PYRIDO[2,3-D]PYRIMIDIN-7-ONE P17 PD173955