黄樟素（Safrole 或 Shikimol），是一种无色或微黄色的油状液体，属于苯基丙烯的一种。 通常由黄樟树的根、树皮、果实中所提取的黄**，或是经由儿茶酚或其他相关亚甲二氧基的化合物化学合成所生产。它是棕色樟脑油的主要成分，并且发现在多种植物中有少量存在，它就像一个天然杀虫剂。高贵绿心**从一种在巴西成长的植物高贵绿心樟制成，它具有特别的西式「糖果店」的香气，它是杀虫增效剂胡椒基丁醚的前体。经动物实验，确定在生物的代谢过程中，会有致癌的风险。

Safrole is a phenylpropene. It is a colorless or slightly yellow oily liquid typically extracted from the root-bark or the fruit of sassafras plants in the form of sassafras oil (although commercially available culinary sassafras oil is usually devoid of safrole due to a rule passed by the FDA in 1960), or is synthesized from catechol or other related methylenedioxy compounds. It is the principal component of brown camphor oil, and is found in small amounts in a wide variety of plants, where it functions as a natural pesticide. Ocotea cymbarum oil made from Ocotea pretiosa, a plant growing in Brazil, and sassafras oil made from Sassafras albidum, a tree growing in eastern North America, are the main natural sources for safrole. It has a characteristic "sweet-shop" aroma.