Avibactam (NXL-104) free acid is a covalent and reversible inhibitor of non-β-lactam β-lactamase (IC50s: 8 nM and 5 nM for β-lactamase TEM-1 and CTX-M-15).
Avanafil metabolite M16 is a major inactive metabolite of the phosphodiesterase 5 (PDE5) inhibitor avanafil . Avanafil is metabolized by the cytochrome P450 (CYP450) isoforms CYP3A4 and CYP2C to the major metabolites avanafil metabolite M16 and avanafil metabolite M4 , as well as minor metabolites.
Lopinavir Metabolite M-1, an active metabolite derived from Lopinavir, effectively inhibits the HIV protease enzyme with a Ki value of 0.7 pM. Additionally, in vitro studies have revealed notable antiviral properties associated with Lopinavir Metabolite M-1.