Liranafate (6-methoxy-2-N-methyl-aminopyridine-thiocarboxylic acid-(5,6,7,8 tetrahydro)-β-Naphthyl ester), a new antifungal drug, is synthesis inhibitor of squalene epoxidase inhibitor and cytoderm inhibitor, which was manufactured by Tosoh Corporation and Zenyaku Kogyo Corporation. It firstly came to the market in August 2000 in Japan. By inhibiting the squalene epoxide reactions of fungal cells and detering the synthesis of ergosterol, which is a constituent of cell membrane. The antifungal activity of Liranafate is 8 times as high as that of Tolnaftate. Liranafate is especially effective against trichophyton rubrum.