Congener (chemistry)

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Example of a congener: the number and locations of Cl groups can vary

In chemistry, congeners are related chemical substances "related to each other by origin, structure, or function".[1]

Common origin and structure[edit]

Any significant quantity of a polyhalogenated compound is by default a blend of multiple molecule types because each molecule forms independently, and chlorine and bromine do not strongly select which site(s) they bond to.

Common origin[edit]

  • Congener (alcohol), substances other than alcohol (desirable or undesirable) also produced during fermentation.
  • Congeners of oleic acids can modify cell membrane behavior, protecting against tumors or having effects on blood pressure.[2]

Common structure[edit]



  1. ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version:  (2006–) "congener".
  2. ^ Effects of oleic acid and its congeners, elaidic and stearic acids, on the structural properties of phosphatidylethanolamine membranes