menaquinone

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See also: ménaquinone

English

Chemical structure of menaquinone
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Etymology

From me(thyl) +‎ na(phtho)quinone.

Pronunciation

Noun

menaquinone (plural menaquinones)

  1. (biochemistry, pharmacology) A pale yellow crystalline naphthoquinone C41H56O2 that is obtained especially from putrefied fish meal and produced by bacteria in the large intestine and essential for the blood-clotting process. It is much more unsaturated than vitamin K1 and slightly less active biologically, and is an isoprenoid derivative of menadione.

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