Chemical composition of essential oils ofCroton hirtusL’Her from Piauí (Brazil)

The essential oils from the fresh leaves of Croton hirtus from two locations, Teresina and Simões in Piauí State, located in northeastern Brazil were obtained by hydrodistillation and analyzed by gas chromatography–flame ionization detection (GC–FID) and gas chromatography–mass spectrometry (GC–MS) techniques and further confirmed by 1H and 13C NMR. The main compounds found in the oil of the leaves from C. hirtus collected at Simões were...