5. When analyzing the medicinal product by thin layer chromatography, the solvent front passed 10.5 cm, and the only spot was at a distance of 7.8 cm from the start line. Under these conditions, barbital and etaminal are characterized by Rf parameters of 0.74 and 0.96, respectively. Which of the following barbiturates is present in the test solution? Schematic representation of the chromatogram.

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.