This present disclosure is related to the field of N-(substituted)-5-fluoro-4-imino-3-methyl-2-oxo-3,4-di-hydropyrimidine-1(2H)-carboxylates and their derivatives and to the use of these compounds as fungicides. Also provided are methods of controlling a fungal disease such as Septoria tritici, comprising administering an effective amount of the fungicide compound to at lease one surface associated with the plant, seed or soil.