Bohemian-Austrian scientist who performed ground-breaking work in physical and general chemistry

British chemist and entrepreneur, discoverer of the first synthetic organic dye and the Perkin reaction for the production of cinnamic acid and coumarin

English chemist who contributed to the development of the periodic table and the concept of valence

Pioneer in analytical chemistry who worked with essential oils, identifies eucalyptol, prepared cyanamide, and analyzed the famous Orgueil meteorite

American chemist co-discovered promethium

Co-discoverer of the first synthesis of vanillin

Brother of Clara Immerwahr who provided the stimulus and money for the syntheses of the insecticide pyrethrum and artificial pepper

Chemistry Nobel Laureate co-developed flash photolysis

First female chemist to work for the U.S. Geological Survey; also recruited to work on the Manhattan Project

British chemist and crystallographer known for his work on optically active N, S, Se, or Sn compounds