3-乙酰基-1,2-噻唑-4-羧酸 、 N-(3-fluorophenyl)hydrazinecarboximidamide 以to give 2-[methyl(4-carboxy-3-isothiazolyl)methylene]-N-(3-fluorophenyl)hydrazinecarboximidamide, (compound 17)的产率得到2-[methyl(4-carboxy-3-isothiazolyl)methylene]-N-(3-fluorophenyl)hydrazinecarboximidamide