This product is an alkaloid extracted from Cephalotaxus fortunei Hook.f. or its congener. This product is off-white or yellowish crystalline powder or amorphous loose solid; it has moisture attracting property; its colour becomes dark when it meets light.

This product is a natural secondary metabolite isolated and purified from the bark of the gymnosperm Picea abies, which is a white or off-white crystalline powder.

This product is extracted from the dried roots of Puerarialobata (Wild.) Ohwi, a legume, and isolated. It is white to slightly yellow crystalline powder.