Homology (chemistry)

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A homolog in chemistry refers to a chemical compound from a series of compounds that differ only in the number of repeated structural units [1]. A homolog is a special case of an analog. Examples are alkanes and compounds with alkyl functional groups that differ in the length of their sidechain (the repeating unit being methylene group -CH2-) or a peptide with one amino acid replaced by another.

See also


  1. IUPAC definitions

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