N-methyl-imidazole derivatives of the formula: ##EQU1## or a pharmaceutically acceptable non-toxic salt thereof, wherein X is an unsubstituted or substituted 6-membered heteroaromatic moiety having two nitro heteroatoms,Y is an unsubstituted or substituted aliphatic moiety, an unsubstituted or substituted cycloaliphatic moiety, an unsubstituted or substituted aralkyl moiety or an unsubstituted or substituted aryl moiety, andZ is an unsubstituted or substituted aliphatic moiety, an unsubstituted or substituted cycloaliphatic moiety, an unsubstituted or substituted aralkyl moiety, an unsubstituted or substituted aryl moiety, an unsubstituted or substituted pyridyl moiety or an alkoxycarbonyl moiety,Are useful as antimycotic agents.