Williams DA, Lemke TL (2002). „Chapter 1: Natural Products”. Foye's Principles of Medicinal Chemistry (5th изд.). Philadelphia: Lippincott Williams Wilkins. стр. 25. ISBN0-683-30737-1. „Natural product: A single chemical compound that occurs naturally. This term is typically used to refer to an organic compound of limited distribution in nature (often called secondary metabolites).”
doi.org
„All natural”. Nature Chemical Biology. 3 (7): 351. jul 2007. PMID17576412. doi:10.1038/nchembio0707-351. „"The simplest definition for a natural product is a small molecule that is produced by a biological source."”
Maplestone RA, Stone MJ, Williams DH (jun 1992). „The evolutionary role of secondary metabolites--a review”. Gene. 115 (1–2): 151—7. PMID1612430. doi:10.1016/0378-1119(92)90553-2.
„Natural Products”. Stedman's Medical Dictionary. Lippincott Williams & Wilkins. Архивирано из оригинала 03. 08. 2016. г. Приступљено 02. 05. 2018. „Natural products: naturally occurring compounds that are end products of secondary metabolism; often, they are unique compounds for particular organisms or classes of organisms.”
naturalproductsfoundation.org
„About Us”. Natural Products Foundation. Архивирано из оригинала 11. 12. 2013. г. Приступљено 7. 12. 2013. „Natural products are represented by a wide array of consumer goods that continue to grow in popularity each year. These products include natural and organic foods, dietary supplements, pet foods, health and beauty products, "green" cleaning supplies and more. Generally, natural products are considered those formulated without artificial ingredients and that are minimally processed.”
nih.gov
ncbi.nlm.nih.gov
„All natural”. Nature Chemical Biology. 3 (7): 351. jul 2007. PMID17576412. doi:10.1038/nchembio0707-351. „"The simplest definition for a natural product is a small molecule that is produced by a biological source."”
Maplestone RA, Stone MJ, Williams DH (jun 1992). „The evolutionary role of secondary metabolites--a review”. Gene. 115 (1–2): 151—7. PMID1612430. doi:10.1016/0378-1119(92)90553-2.
National Center for Complementary and Integrative Health (13. 7. 2013). „Natural Products Research—Information for Researchers | NCCIH”. U.S. Department of Health & Human Services. „Natural products include a large and diverse group of substances from a variety of sources. They are produced by marine organisms, bacteria, fungi, and plants. The term encompasses complex extracts from these producers, but also the isolated compounds derived from those extracts. It also includes vitamins, minerals and probiotics.”
thefreedictionary.com
Webster's Revised Unabridged Dictionary (1913). „Natural product”. Free Online Dictionary and C. & G. Merriam Co. „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.”
web.archive.org
„About Us”. Natural Products Foundation. Архивирано из оригинала 11. 12. 2013. г. Приступљено 7. 12. 2013. „Natural products are represented by a wide array of consumer goods that continue to grow in popularity each year. These products include natural and organic foods, dietary supplements, pet foods, health and beauty products, "green" cleaning supplies and more. Generally, natural products are considered those formulated without artificial ingredients and that are minimally processed.”
„Natural Products”. Stedman's Medical Dictionary. Lippincott Williams & Wilkins. Архивирано из оригинала 03. 08. 2016. г. Приступљено 02. 05. 2018. „Natural products: naturally occurring compounds that are end products of secondary metabolism; often, they are unique compounds for particular organisms or classes of organisms.”