CAS Registry Numbers are an important tool for substance searching. These are unique identifiers assigned by the Chemical Abstracts Service (CAS) to specific substances identified by them in the chemical literature.

CAS Numbers are not related to chemistry, are unrelated to any previous systems, and do not readily form phonetic analogs or synonyms. The numbers are simple and regular, convenient for database searches.
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Chemis3D is a free Java Applet for the online 3D Visualization of Molecular Models. Small molecules as well as macromolecular structures could be manipulated and rendered in a variety of styles and colors. Read more…

This year’s Nobel Prize in chemistry was awarded jointly to Richard F. Heck, Ei-ichi Negishi and Akira Suzuki for the development of palladium-catalyzed cross coupling.

Left to Right: Richard F. Heck, Ei-ichi Negishi and Akira Suzuki
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