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chemeurope.com's Encyclopedia of Chemistry provides articles for 64,557 entries from chemistry, pharmaceutics and material sciences as well as related scientific disciplines.

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Helium :For other uses of this term, see Helium (disambiguation) . Helium (He) is a colorless, odorless, tasteless, non-toxic, inert monatomic chemical element that heads the noble gas series in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest more

Cyclol

Cyclol , mainly because it eliminates the resonance stabilization of the peptide bond . This reaction was the basis of Dorothy Wrinch's cyclol model of proteins. The cyclol hypothesis is the first structural model of a folded , globular protein . The same studies appeared to show that the mo more

Durian

Durian The durian () is the fruit of trees of the genus Durio belonging to the Malvaceae , a large family which includes hibiscus , okra , cotton , mallows and linden trees. Widely known and revered in Southeast Asia as the "King of Fruits," the fruit is distinctive for its large size, uniqu more

Uranium

Uranium Uranium () is a white/black metal lic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 proton s and electron s, 6 of them valence electron s. It can have between 141 and 146 neutron s, with 143 and 146 in its most co more

Enzyme inhibitor

Enzyme inhibitor protease in a complex with the protease inhibitor ritonavir . The structure of the protease is shown by the red, blue and yellow ribbons. The inhibitor is shown as the smaller ball-and-stick structure near the centre. Created from PDB 1HXW . Enzyme inhibitors are molecule s that more

Chemical elements