The chemical Canthaxanthin has a known molecular formula of C40-H52-O2. Synonyms may include: E 161 G, 4-07-00-02680 (Beilstein Handbook Reference), C.I. Food Orange 8, all-trans,beta-Carotene-4,4'-dione, BRN 1898520, Cantaxanthin, Cantaxanthine, Canthaxanthine, Carophyll Red, Carotene-4,4'-dione, beta-, beta-Carotene-4,4'-dione (ChemID).