5,6-Epoxy-5,6-dihydroretinol 5,6-Monoepoxy vitamin A 5,6-Monoepoxyretinal 5,6-Monoepoxyvitamin A 512-39-0 574-Chromogen BRN 1432208 Hepaxanthin Retinol, 5,6-epoxy-5,6-dihydro- Vitamin A 5,6-epoxide Vitamin A epoxide