135270-10-9

(2S,3S)-2-(2,4-Difluorophenyl)-3-methyl-2-[(1H-1,2,4-triazol-1-yl)methyl]oxirane is a useful synthetic intermediate in the synthesis of (2S,3R)-Efinaconazole (E435085); the 2S,3R-enantiomer of Efinaconazole (E435070) which is a topical antifungal for onychomycosis.