The chemical Menatetrenone has a designated molecular formula of C31H40O2 and a molecular weight of 444.659 g/mol. Synonyms may include: E3100, Kaytwo, Menaquinone-4, Menaquinone K4, Menatetrenona [INN-Spanish], Menatetrenonum [INN-Latin], 2-Methyl-3-trans-tetraprenyl-1,4-naphthoquinone, MK4, K2(sub 20), Vitamin MK 4, Vitamin K2(sub 20), 2-Methyl-3-geranylgeranyl-1,4-naphthoquinone (ChemID).