Synonyms: Sarcinaxanthin(8CI); b,b-Carotene,5,5',18,18'-tetradehydro-5,5',6,6'-tetrahydro-2,2'-bis(4-hydroxy-3-methyl-2-butenyl)-,[2R(E),2'R(E),6R,6'R]-; b,b-Carotene,5,5',18,18'-tetradehydro-5,5',6,6'-tetrahydro-2,2'-bis[(2E)-4-hydroxy-3-methyl-2-butenyl]-,(2R,2'R,6R,6'R)- (9CI)