AZD9496 maleate is a highly potent and selective antagonist of the estrogen receptor alpha (ERα), exhibiting an IC50 value of 0.28 nM. This compound, AZD9496 maleate, is an orally bioavailable selective estrogen receptor degrader (SERD).
D18 is an immune modulator that acts as a dual agonist for TLR7/8 (with EC50 values of 24 nM for hTLR7 and 10 nM for hTLR8, respectively). It enhances the expression of PD-L1 through epigenetic regulation, thereby increasing the sensitivity of tumors to PD-1/PD-L1 blockade. Additionally, D18 functions as a cytotoxin for ADC synthesis, specifically for the ADC HE-S2 [1].