TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...

What does cannabis, coca leaf, and all coffee have in common? They all contain alkaloids, a powerful group of medicinal compounds found in plants around the world. While little is presently known ...

RECENT advances in chemotherapy present the police toxicologist with the problem of extracting and identifying from viscera an increasing number of basic organic compounds. In the past, methods of ...

Yeast cells have been turned into biological factories that manufacture a range of alkaloids — naturally occurring chemical compounds such as morphine that contain nitrogen atoms and that often have ...