3-{5,7-dioxo-5H,6H,7H-pyrrolo[3,4-b]pyridin-6-yl}piperidine-2,6-dione is a thalidomide analog useful in the synthesis of PROTAC.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.