神乐片中钩藤碱的双波长薄层扫描定量法

Quantitative Determination of Rhynchophylline in Shenle Tablets

采用双波长薄层扫描法测定了神乐片中钩藤碱的含量。钩藤碱的最大吸收波长是２５３ｎｍ，参比波长是３７０ｎｍ。本法操作简便，结果较好，为控制产品质量提供了科学依据。

The content of rhynochophylline in Shenle Tablets was examined by dualwavelength thin layer chromatography. The sample wavelength was 253 nm and the reference wavelength was 370 nm. Sx=3 and the slit was 1.2 nm×1.2 nm. This standard curve was linear within the range of 0 5￣5 μg and correlation coefficient was 0.9997. The average recovery was 98.40% ( n =5). This rapid, simple, sensitive and specific method is suitable for quality control of this product.