PDEδ ATTEC 12C is a selective PDEδ autophagy-tethering compound (ATTEC) Degrader (DC50 = 1.7 μM; Dmax = 85%; Kd = 56 nM). Degrades PDEδ through lysosome-mediated autophagy. Inhibits proliferation of KRAS mutant Capan-1 and MiaPaCa-2 pancreatic cancer cells (IC50 values are 0.8 μM and 1.4 μM respectively); dose- and time-dependently induces apoptosis.