Figure 2. Thin layer chromatogram of dichloromethane solutions with known quantities of caffeine

From

TLC Procedure for Determination of Approximate Contents of Caffeine in Food and Beverages

Carmen Palacios, Maria L. F. Salatino, Antonio Salatino

World Journal of Chemical Education. 2017, 5(5), 148-152 doi:10.12691/wjce-5-5-1