If that's disillusioning, consider another organic substance extracted from a tropical plant: strychnine.

Tannin is a substance extracted from the "quebracho" tree, used for tanning hides.

Coutinho was responsible for the discovery of the contraceptive effects of gossypol, a substance extracted from cotton.

It's a common enough substance, extracted from plants.

Vitisin may refer to several substances extracted from grapevines:

He named the substance extracted from the fungus penicillin and in 1942 it was successfully used to treat a streptococcus infection.

Nature's functions and diversity are not systematically subject to increasing concentrations of substances extracted from the Earth's crust.

Quassin is a white bitter, crystalline substance extracted from the quassia tree.

It's a substance extracted from rice that has been fermented with special yeast.