2-Hydroxy-2-(1,1,2,2-tetrafluoroethyl)-4-nitro-6-(trifluoromethyl)benzimidazoline sodium salt 、
silver nitrate 以yielding 2-hydroxy-2-(1,1,2,2-tetrafluoroethyl)-4-nitro-6-(trifluoromethyl)benzimidazoline, silver salt的产率得到2-Hydroxy-2-(1,1,2,2-tetrafluoroethyl)-4-nitro-6-(trifluoromethyl)benzimidazoline