Synonyms: 1,4-Naphthalenedione,2-(3,7,11,15,19,23,27,31-octamethyl-2,6,10,14,18,22,26,30-dotriacontaoctaenyl)-,(all-E)-; 1,4-Naphthalenedione,2-[(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]-(9CI); 1,4-Naphthoquinone,2-(3,7,11,15,19,23,27,31-octamethyl-2,6,10,14,18,22,26,30-dotriacontaoctaenyl)-,(all-E)- (8CI); Demethylmenaquinone 8; Menaquinone 8, demethyl-