carotenone carotenoid ether 2,2'-dioxospirilloxanthin (3E,3'E)-1,1'-dimethoxy-3,3',4,4'-tetradehydro-1,1',2,2'-tetrahydro-psi,psi-carotene-2,2'-dione 2,2'-diketospirilloxanthin 2,2'-dioxospirilloxanthin 624.418 624.89160 A carotenoid ether that is (3E,3'E)-1,1'-dihydroxy-3,3',4,4'-tetradehydro-1,1',2,2'-tetrahydro-psi,psi-carotene-2,2'-dione in which both hydroxyl hydrogens are substituted by methyl groups. C42H56O4 CHEBI:64793 COC(C)(C)C(=O)\C=C\C(C)=C\C=C\C(C)=C\C=C\C(C)=C\C=C\C=C(C)\C=C\C=C(C)\C=C\C=C(C)\C=C\C(=O)C(C)(C)OC Diketospirilloxanthin InChI=1S/C42H56O4/c1-33(21-15-23-35(3)25-17-27-37(5)29-31-39(43)41(7,8)45-11)19-13-14-20-34(2)22-16-24-36(4)26-18-28-38(6)30-32-40(44)42(9,10)46-12/h13-32H,1-12H3/b14-13+,21-15+,22-16+,25-17+,26-18+,31-29+,32-30+,33-19+,34-20+,35-23+,36-24+,37-27+,38-28+ KEGG:C15885 KNApSAcK:C00023064 LIPID_MAPS_instance:LMPR01070154 MNKGOUOMGDXWPK-YDDLGYPNSA-N MetaCyc:CPD-12617 PMID:19136077 Reaxys:1917842 chebi_ontology