[Propanidid and etomidate identification from the blood by thin-layer chromatography]

Propanidid and etomidate were extracted from blood with diethyl ether at pH ca. 8 (phosphate buffer), then separated and identified by thin-layer chromatography on silica gel, using diethyl ether-acetone (3:1, v/v) for propanidid or dioxane-acetic acid (47:3, v/v) for etomidate as the mobile phase. Both compounds can be revealed on dried chromatograms using sodium carbonate solution up to the amount 1 microg/cm3 of plasma, and it is sufficient sensivity for propanidid adhibited in therapeutic doses, whereas this limits the detection of etomidate for overdosed patients only.