has functional parent carotenol spirilloxanthin carotenoid ether ketone hydrate 2,2-dihydroxyspirilloxanthin (3E,3'E)-1,1'-dimethoxy-3,3',4,4'-tetradehydro-1,1',2,2'-tetrahydro-psi,psi-caroten-2,2-diol 2,2-dihydroxyspirilloxanthin 628.449 628.925 A carotenoid ether that is spirilloxanthin carrying two hydroxy groups, both at position 2. C(=C(\C=C\CC(OC)(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(OC)(C)C)(O)O)\C)\C)\C)/C)/C C42H60O4 CHEBI:91228 InChI=1S/C42H60O4/c1-34(22-15-24-36(3)26-17-28-38(5)30-19-32-40(7,8)45-11)20-13-14-21-35(2)23-16-25-37(4)27-18-29-39(6)31-33-42(43,44)41(9,10)46-12/h13-31,33,43-44H,32H2,1-12H3/b14-13+,22-15+,23-16+,26-17+,27-18+,30-19+,33-31+,34-20+,35-21+,36-24+,37-25+,38-28+,39-29+ MetaCyc:CPD-16862 XUYXCIAFJRLHMN-GWSMOWMWSA-N chebi_ontology spirilloxanthin-2,2-diol