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PROTACERα Degrader-9 (Compound 18c) is a dual-targeting PROTAC degrader designed to diminish estrogen receptor α (ERα) and aromatase (ARO). It demonstrates a Ki of 0.25 μM for ERα binding and an IC50 of 4.6 μM for ARO inhibition. This compound curbs proliferation in wild-type MCF-7 cells (IC50=0.54 μM) and ERα mutant variants MCF-7EGFR (IC50=0.075 μM), MCF-7D538G (IC50=0.31 μM), and MCF-7Y537S (IC50=2.3 μM), while also downregulating ERS1 and MYC expression. PROTACERα Degrader-9 arrests the cell cycle at the G2/M phase and induces apoptosis in MCF-7 cells, exhibiting antitumor efficacy in mouse models.

| Description | PROTACERα Degrader-9 (Compound 18c) is a dual-targeting PROTAC degrader designed to diminish estrogen receptor α (ERα) and aromatase (ARO). It demonstrates a Ki of 0.25 μM for ERα binding and an IC50 of 4.6 μM for ARO inhibition. This compound curbs proliferation in wild-type MCF-7 cells (IC50=0.54 μM) and ERα mutant variants MCF-7EGFR (IC50=0.075 μM), MCF-7D538G (IC50=0.31 μM), and MCF-7Y537S (IC50=2.3 μM), while also downregulating ERS1 and MYC expression. PROTACERα Degrader-9 arrests the cell cycle at the G2/M phase and induces apoptosis in MCF-7 cells, exhibiting antitumor efficacy in mouse models. |
| Targets&IC50 | ERβ:>79 μM (Ki), ERα:0.25 μM (Ki), Aromatase:4.6 μM |
| Formula | C58H64F3N7O9S2 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |

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