(all-E)-2-Methyl-3-(3,7,11,15,19,23,27,31-octamethyl-2,6,10,14,18,22,26,30-dotriacontaoctaenyl)-1,4-naphthalenedione 1,4-Naphthalenedione, 2-methyl-3-((2E,6E,10E,14E,18E,22E,26E)- 3,7,11,15,19,23,27,31-octamethyl-2,6,10,14,18,22,26,30-dotriacontaoctaenyl)- 1,4-Naphthalenedione, 2-methyl-3-(3,7,11,15,19,23,27,31-octamethyl-2,6,10,14,18,22,26,30-dotriacontaoctaenyl)-, (all-E)- 1,4-Naphthoquinone, 2-methyl-3-(3,7,11,15,19,23,27,31-octamethyl-2,6,10,14,18,22,26,30-dotriacontaoctaenyl)- 12713-10-9 23482-64-6 523-38-6 MK 8 Menaquinone 8 Menaquinone MK8 Vitamin K2(40) Vitamin MK 8