Formamidine acetate is mainly used for a class of biologically active compounds such as antitumor agents 4 - hydroxy -5-- fluoropyrimidine such as the synthesis of cyclohexyl can also be used to synthesize six antifungal peptide synthesis Trichloropyrimidine and so on, in new drugs Development and synthesis of broad prospects for development and application of value, is worthy of study an important class of salts of acetic acid a squint.