
A reaction intermediate or an intermediate is a molecular entity that is formed from the reactants (or preceding intermediates) and reacts further to give the directly observed products of a chemical reaction. Most chemical reactions are stepwise, that is they take more than one elementary step to complete. An intermediate is the reaction product ...
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http://en.wikipedia.org/wiki/Reaction_intermediate

<biochemistry> Any biomolecule which iscreated and destroyed during the course of of a particular reaction pathway. ... (09 Oct 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
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