(2R,3S)-3-(2,4-Difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide is a stereoisomer of (αR,βR)-β-(2,4-Difluorophenyl)-β-hydroxy-α-methyl-1H-1,2,4-triazole-1-butanethioamide (CAT# D446025), which is used in the preparation of triazole antifungal agents.