PRODRUG USING NITROIMIDAZOLE
Provided is a prodrug of a therapeutically active organic compound having: an amino group, a cyclic amino group or a hydroxyl group in the molecule
and a 2-nitro-1-imidazole propionic acid. In particular, provided is a prodrug in which the therapeutic organic compound is selected from an antitumor agent. Said prodrug specifically cleaves at the low-oxygen site within a living body and exhibits an innate therapeutic activity.