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A method is presented permitting the qualitative and quantitative determination of all three presently known hormones (JH1-3). The determination is based on the method of radioactive isotope dilution, whereby a very small known amount of tritium-labelled JH-1 is added to the ether extract of the particular species. The addition of radioactive JH-1 permits the isolation of all three hormones, because of their similar behaviour during the chosen work up.

zeitschrift für naturforschung c

Eine Methode zur qualitativen und quantitativen Bestimmung von drei Juvenilhormonen von Insekten: Nachweis von 10.11-Epoxy-3.7.11-trimethyl-2-trans-6-trans-dodecadiensäuremethylester in Melolontha melolontha / Method for the Qualitative and Quantitative Determination of Three Natural Insect Juvenile Hormones