Piperine is the responsible for the of and , along with (an of piperine). It has also been used in some forms of and as an . Piperine forms monoclinic needles, is slightly soluble in water and more so in , or : the solution in alcohol has a pepper-like taste. It yields salts only with strong acids. The platinichloride B4H2PtCl6 forms orange-red needles. ("B" denotes one mole of the alkaloid base in this and the following formulae.) in added to an alcoholic solution of the base in presence of a little gives a characteristic periodide, B2HII2, crystallising in steel-blue needles, mp. 145°C. Anderson first hydrolysed piperine by alkalis into a base and an acid, which were later named and piperic acid respectively. The alkaloid was synthesised by the action of piperoyl chloride on piperidine.
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