STRUCTURE AND NOMENCLATURE
of Vitamin K-2

 

Nomenclature:    2-methyl-3-difarnesyl-1,4-naphthoquione

Common Name:    Menaquinone-n (MK-n)

 

Where n represents the number of isoprenoid groups are linked to the menadione.
The menadione is the two cyclohexenes that define the K-Vitamin. The number of carbon chains (defined by n) are isoprenoid groups. In this case, there are 4 isoprenes.