- Albert Ladenberg, born 1842, synthesized coniine, piperidine, pyridine, and other compounds.
- William H. Bragg, born 1862, researcher in X-rays and crystal structure; Nobel Prize in Physics (1915).
- Fritz Haber demonstrated process of nitrogen fixation to Badische Aniline und Soda-Fabrik in 1909.
- Sergei S. Nametkin, born 1876, researched terpene chemistry and rearrangement of camphenes.
- Antoine-Jerome Balard announced discovery of bromine (Br, 35) to the Academie de Sciences, Paris, in 1826.
- Samuel P. Massie, Jr., born 1919, researched cures for diseases; encouraged disadvantaged students into science careers.
- Ernst O. Beckmann, born 1853, discovered rearrangement of oximes of ketones into acid amides or anilides (Beckmann molecular transformation); invented apparatus for determination of boiling and freezing point of solutions (1886).
- Herbert S. Gasser, born 1888, researched electrophysiology of nerves; Nobel Prize in Medicine (1944).
- John H. Northrop, born 1891, conducted research on purification of enzymes; discovered fermentation process for acetone; Nobel Prize in Chemistry (1946).
- American Cyanamid Company organized in 1907.
- Robert Goddard obtained a patent for a liquid fuel rocket in 1914.
- Camillo Golgi, born 1843, researched structure of the nervous system; Nobel Prize in Physiology or Medicine (1906).
- Jason Cardelli reports interstellar abundances of heaviest elements, including thallium and lead, are detected within interstellar gas, in Science magazine in 1994.