Demethoxycurcumin (DMC) is a natural demethoxy derivative of curcumin. More stable than curcumin in physiological media, DMC suppresses proliferation in cancer cells at 50-100 μM. It down-regulates the transcriptional coactivator p300, suppressing the Wnt/β-catenin pathway, and inhibits lipopolysaccharide induction of iNOS.