Fumarate hydratase-IN-1 is a pro-drug inhibitor of fumarate hydratase, an important enzyme in the tricarboxylic acid (TCA) cycle. This cell permeable compound is converted to the active carboxylic acid by intracellular esterases (Ki = 4.5 µM for free acid). The ethyl ester displayed cell-growth inhibitory activity against several cancer lines under nutrient (glucose) deprived conditions with an average IC50 = 2.2 µM.
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