natural product

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem., Biochem.) A chemical substance produced by a living organism; -- a term used commonly in reference to chemical substances found in nature that have distinctive pharmacological effects. Such a substance is considered a natural product even if it can be prepared by total synthesis.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biochemistry Any compound produced naturally by a living organism; especially those compounds that are useful commercially