Difenoconazole-d 6 (hydrochloride) is deuterium labeled Difenoconazole. Difenoconazole is a sterol demethylation inhibitor, as a fungicide. Difenoconazole binds the heme portion of the fungal cytochrome P450 51, interferes the mycelial growth and inhibits the spore germination of pathogens, suppressing fungal growth.