Abstract: The disclosure relates to bifunctional CDK-modulating compounds having the structure W-L-T, where W is a targeting group that binds specifically to a CDK protein, T is an E3-ligase binding group, and L is absent or is a bivalent linking group that connects W and T together via a covalent linkage. Compounds and pharmaceutical compositions thereof can promote degradation of one or more CDK protein in a cell and are thus useful for treating, inhibiting, and preventing CDK-associated diseases, disorders and conditions, including cancers.