Division STRUCTURAL FORMULA

Vitamin K (menaquinone) series with menaquinone-7 (MK-7)(n = 6) being C₄₆H₆₄O₂, menaquinone-6 (MK-6)(n = 5) being C₄₁H₅₆O₂ and menaquinone-4 (MK-4)(n = 3) being C₃₁H₄₀O₂.