LSD is a synthetic derivative of which type of naturally occurring growth?
Semisynthesis and the semisyntheses of the further novel antibiotics tetracycline, doxycycline, and tigecycline. Further examples of semisynthesis include the early commercial production of anti-cancer agent paclitaxel from 10-deacetylbaccatin isolated from the needles of "Taxus baccata" (European yew), the preparation of LSD from ergotamine isolated from fungal cultures of ergot, and the semisynthesis of the antimalarial drug artemether from naturally occurring artemisinin. As the field of synthetic chemistry advances, certain transformations become cheaper or easier, and the economics of a semisynthetic route may become less favorable. Semisynthesis Semisynthesis or partial chemical synthesis is a type of chemical synthesis that uses chemical compounds
Naturally occurring radioactive material 1 NORM industrial activity or a type 2 NORM industrial activity. Naturally occurring radioactive material Naturally Occurring Radioactive Materials (NORM) and Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) consist of materials, usually industrial wastes or by-products enriched with radioactive elements found in the environment, such as uranium, thorium and potassium and any of their decay products, such as radium and radon. Natural radioactive elements are present in very low concentrations in Earth's crust, and are brought to the surface through human activities such as oil and gas exploration or mining, and through natural processes like leakage of radon gas to