NCIt definition : A synthetic agent, also known as IMPY, with antineoplastic properties. IMPY inhibits
ribonucleotide reductase, an enzyme that converts ribonucleotides to deoxyribonucleotides
during DNA synthesis; this agent specifically binds the smaller, nonheme-iron subunit
of the enzyme. (NCI04);
NCIt note : Inhibits the nonheme-iron subunit of ribonucleotide reductase;