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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Representative HPLC chromatogram of the EtOH 50% extract of C. collinum (5 mg/mL extract dissolved in ACN 5%, injection volume 20 µL, detection wavelength = 320 nm). The main compounds could be confirmed by LC-MS experiments, 1H-NMR and spiking experiments.