28380-31-6 7,7',8,8'-Tetrahydro-beta,beta-carotene-3,3'-diolbeta,beta-carotene-3,3'-diol, 7,7',8,8'-tetradehydro-, (3R,3'R)- Alloxanthin beta,beta-Carotene-3,3'-diol, 7,7',8,8'-tetradehydro-, (3R,3'R)-