F-A(三氟乙酸盐)产品是F-Amidine (trifluoroacetate salt) is an irreversible inhibitor of protein arginine deiminase (PAD). The in vitro IC₅₀ values are 29.5 µM, 350 µM, and 21.6 µM for PAD1, PAD3 and PAD4, respectively. The IC₅₀ for cytoxicity in HL-60, MCF-7, and HT-29 cancer cell lines is 0.5 μM, 0.5 μM and 1 μM, respectively.