Keywords: Aminopterin.svg Structural diagram of aminopterin Created using http //www acdlabs com/download/chemsk html ACD/ChemSketch 10 0 and Inkscape Own 2007-02-03 Fvasconcellos N-substituted primary amides Aromatic amines Dicarboxylic acids Dihydrofolate reductase inhibitors Chemotherapeutic agents Nitrogen heterocycles Teratogens |