Thalidomide-Acid CAS:1061605-21-7 is thalidomide acid derivative. It is commonly used as a precursor to PROTAC that hijacks cereblon as the E3 ubiquitin ligase component. The carboxylic acid group readily conjugate with a linker/target protein ligand.
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![3-{5,7-dioxo-5H,6H,7H-pyrrolo[3,4-b]pyridin-6-yl}piperidine-2,6-dione](https://e1752fbe.rocketcdn.me/wp-content/uploads/AP13955-CAS-31804-66-7-1.png)

