SUBSTITUENT

Substituent

In organic chemistry and biochemistry, a substituent is an atom or group of atoms substituted in place of a hydrogen atom on the parent chain of a hydrocarbon. The terms substituent, side-chain, group, branch, or pendant group are used almost interchangeably to describe branches from a parent structure, though certain distinctions are made in the context of polymer chemistry. In polymers, side chains extend from a backbone structure. In proteins, side chains are attached to the alpha carbon atoms of the amino acid backbone.

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substituent

Noun

  1. any atom, group, or radical substituted for another, or entering a molecule in place of some other part which is removed


The above text is a snippet from Wiktionary: substituent
and as such is available under the Creative Commons Attribution/Share-Alike License.

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