engleski

Thin-layer chromatography of some derivatives of 4, 7-dihydroxycoumarin

The influence of two adsorbents and three solvent systems on the Rf-values of 20 newly synthesized derivatives of 4, 7-dihydrocoumarin was examined by thin-layer chromatography (TLC). From the results obtained from Rf values it was concluded that the system benzene - acetic acid - isobutylmethyl ketone (15:3:2) on silica gel HF254 was the most effective

TLC ; 4 ; 7-dihydroxycoumarin derivatives ; coumarin

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