Congener (chemistry)

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

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

Common origin and structureEdit

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 originEdit

  • 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 structureEdit



  1. ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version:  (2006–) "congener". doi:10.1351/goldbook.CT06819
  2. ^ Funari, Sérgio S.; Barceló, Francisca; Escribá, Pablo V. (2003). "Effects of oleic acid and its congeners, elaidic and stearic acids, on the structural properties of phosphatidylethanolamine membranes" (PDF). Journal of Lipid Research. 44 (3): 567–575. doi:10.1194/jlr.m200356-jlr200. PMID 12562874.