menaquinone

English dictionary entry

Meanings

noun

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.

/ˌmɛn.əˈkwɪn.əʊn/ /ˌmɛn.əˈkwɪˌnoʊn/

menaquinone menaquinones

From me(thyl) + na(phtho)quinone.

vitamin K2

naphthoquinone vitamin K

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