Dihydroguaiaretic acid has antioxidative activity, can significantly protect primary cultured neuronal cells against glutamate-induced oxidative stress.

1-Methyl-2-(methylthio)imidazole is an impurity of Methimazole, a thiourea antithyroid agent that prevents iodine organification, thus inhibiting the synthesis of thyroxine.

6alpha-Chloro-5beta-hydroxywithaferin A is a natural product.