Antitumor (cytostatic) drug, alkylating compound (methylhydrazine groups). Disrupts trans methylation processes: transfer of methyl radicals from methionine to transfer RNA (t-RNA). The absence of normally functioning t-RNA contributes to disruption of DNA, RNA and protein synthesis. An important component in the mechanism of action is the formation of hydrogen peroxide (the result of autooxygenation). Hydrogen peroxide, when interacting with sulfhydryl groups of tissue proteins, contributes to a denser spiraling of the DNA molecule and deterioration of transcription processes. Blocks MAO activity, which causes the accumulation of tyramine and, as a result, an increase in the content of norepinephrine in the endings of the sympathetic nervous system and an increase in blood pressure.