Five Schiff bases were prepared from piperonal and diamines by condensation reaction.

成新的双-胡椒醛缩二胺类席夫物。

Composition of 1,8 - cineole (80%), camphene, phellandrene, Terpineol acetate, geraniol, isoamyl aldehyde, citronellal, and pepper ketones.

组成1,8-桉素（80%以上）、莰、水芹、萜品、乙酸香、戊醛、香茅醛和胡椒酮等。

After the process of chlorization, hydrolytic decomposition and condensation, the hemopexis acid amine product was obtained.

用胡椒醛为起始原料,经氯、水解、缩,制得血凝酸胺。