[Preparation and qualitative control of compound Dyclonine's suspending mixture].

The paper deals with the composition, preparation and qualitative control of compound Dyclonine's suspending mixture, one of gastroscopic mucomembranous anesthetics. The content of Dyclonine hydrochloride was detected by ultraviolet spectrophotometry. It shows that the average rate of recovery is 100.80%, RSD = 1.32%(n = 6). At room temperature, the appearance and content of the preparation are not changed in 0, 30, 180, 365 days respectively. The preparation is widely and successfully used in clinics with easy procedure and excellent stability.