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Angelylalkannin is a naphthoquinone compound isolated from the root of Alkanna tinctoria. Angelylalkannin showed significant inhibitory effects in the antiproliferative effect test on human colon cancer cells HCT-116 and SW-480. The median inhibitory concentration (IC50) of Angelylalkannin was 4.76 mM for HCT-116 cells and 7.03 mM for SW-480 cells. Like alkannin, Angelylalkannin can arrest the cell cycle in the G1 phase and induce apoptosis at a concentration of 1-10 mM.

[1] Naphthoquinone Components from Alkanna tinctoria (L.) Tausch Show Significant Antiproliferative Effects on Human Colorectal Cancer Cells