2-(Methylthio)-N-phenylpyrido(2,3-d)pyrimidin-4-amine 4-Anilino-2-methylthiopyrido(2,3-d)pyrimidine 72564-74-0 BRN 0540958 MD 39-AM MD-39-AM Pyrido(2,3-d)pyrimidin-4-amine, 2-(methylthio)-N-phenyl-