Scientific Name: Busulfan
Brand Name: Busilvex, Busulfex, Myleran
Company Owner: Otsuka pharmaceutical co ltd, Glaxosmithkline
Mechanism Of Action Busulfan is an alkylating agent that contains 2 labile methanesulfonate groups attached to opposite ends of a 4-carbon alkyl chain. Once busulfan is hydrolyzed, the methanesulfonate groups are released and carbonium ions are produced. These carbonium ions alkylate DNA, which results in the interference of DNA replication and RNA transcription, ultimately leading to the disruption of nucleic acid function. Specifically, its mechanism of action through alkylation produces guanine-adenine intrastrand crosslinks. These crosslinks occur through a SN2 reaction guanine N7 nucleophilically attacks the carbon adjacent to the mesylate leaving group. This kind of damage cannot be repaired by cellular machinery and thus the cell undergoes apoptosis.
Description of the Drug: Busulfan is an alkylating agent used to treat chronic myelogenous leukemia.
Protein Data Bank: Not Available
Source: DrugBank Online – Retrieved 2023-01-23 from