Fig. 1

Chemical structure of NEO212. Shown is the carbamate linkage between the monoterpene perillyl alcohol (POH) and the amide functional group of the imidazotetrazine TMZ. Shaded area: TMZ moiety that forms the highly reactive methyldiazonium ion that methylates DNA after spontaneous decomposition of the pro-drug TMZ that takes place in aqueous solution at neutral pH [31]