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Effects of compounds 12–22, 26–28, 30, 32, 35 and 39 on cancer cell viability at 100 µM against human melanoma (A375) and human colon cancer (HT-29) cell lines, and human fibroblasts HF. Cell lines were incubated with 100 µM of compounds for 72 h. The cytotoxicity was measured using MTT assays. The cytotoxicity is represented as a percentage of viability, relative to the untreated cells (negative control, which is equal to 100%). N = 3.
