Determination of Butylcinnamylpyrazini(AP-237) Preparations by Sodium Tetraphenylboron Method

A sodium tetraphenylboron method was applied to determine the contents of AP-237preparations. The average recoyeries of tablets and injections were 99.45 0.42% and 99 .72 0.52% respectively. This method was smple, rapid and accurate. The method provide