Alizarin complexone (Standard) is the analytical standard of Alizarin complexone (HY-121075). This product is intended for research and analytical applications. Alizarin complexone is a calcium-binding fluorescent dye. Alizarin complexone stains mineralized areas of bone by binding to calcium crystals. Alizarin complexone inhibits the reverse transcriptase activity of RAV-2, HIV-1, and RSV with IC50 values of 3.8 µg/mL, 45 µg/mL, and 100 µg/mL, respectively. Alizarin complexone exhibits antiviral activity against HIV-1 and RSV. Alizarin complexone delays RSV-induced tumor induction in chickens[1][2][3][4].