Panaxydiol exhibits histamine-release inhibition activity[1]. Panaxydiol is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
References
[1] Naglaa S Ashmawy, et al. Phytoconstituents from Polyscias guilfoylei leaves with histamine-release inhibition activity. Z Naturforsch C J Biosci. 2019 May 27;74(5-6):145-150. DOI:10.1515/znc-2018-0167