HEMTAC CDK4/6 degrader 1 is a PROTAC connected by ligands for HSP90 and CDK4/6 with a K d value of 35.7 μM. HEMTAC CDK4/6 degrader 1 induces CDK4/6 degradation in B16F10 melanoma cells. HEMTAC CDK4/6 degrader 1 arrests cell cycle at G0/G1 phase and induces apoptosis. HEMTAC CDK4/6 degrader 1 can be used in research of cancer. HEMTAC CDK4/6 degrader 1 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.