正清风痛宁（盐酸青藤碱片）主要用于各类急、慢性关节炎及类风湿性关节炎。其主要成份为盐酸青藤碱。原采用非水滴定法测定其含量，但操作繁琐，检测条件较难控制，终点的突跃不明显，误差较大。故现采用高效液相色谱法测定其含量。本法较非水滴定法具有操作简单，结果准... Zheng Qing Feng Tong Ning (sinomenine hydrochloride tablets) is mainly used for all kinds of acute and chronic arthritis and rheumatoid arthritis. Its main ingredient is sinomenine hydrochloride. The original use of non-aqueous titration method to determine the content, but the operation is cumbersome, the detection conditions are more difficult to control, the end of the jump is not obvious, the error is larger. Therefore, the content is determined by high performance liquid chromatography. This method is simpler than non-aqueous titration, and the results are quasi...