Determination of Peiminine in Wenglitong Tablets by TLC / 中国药房

OBJECTIVE:To determine the content of Peiminine in Wenglitong tablets by TLC.METHODS:The content of Peiminine was determined by dual wavelength TLC with gel silica G as thin layer plate.The developing solvent was chloroform-ethyl acetate-methanol-ammonia water(2∶6.5∶1∶0.5)and the developer was modified potassium heptaiodobismuthate.RESULTS:The liner range of Peimine was 0.4～2.4 ?g with an average recovery rate of 99.28%(RSD=1.17%,n=6).CONCLUSION:This method is simple,reliable,reproducible and suitable for the quality control of Wenglitong tabl-ets.