M-Azidopyrimethamine

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** An antifolate derived from diaminopyrimidine with cytotoxic properties. With a mechanism of action similar to that of methotrexate (MTX), m-azidopyrimethamine blocks tetrahydrofolate synthesis, resulting in depletion of nucleotide precursors and inhibition of DNA, RNA and protein synthesis. This agent is more lipophilic but less potent than MTX. (NCI04)

**Synonyms:** - MZP