References |
Ref.507 : George Britton, Harish C. Malhotra, Raj Kumari Singh 1, Sandra Taylor, Trevor W. Goodwin, Avraham Ben-Aziz, Phytochemistry, Volume 15, Issue 12, 1976, Pages 1971-1972, "Methoxyspheroidene and methoxyspheroidenone, two carotenoids from Rhodopseudomonas spheroides" Ref.342 : Jackman, L. M.; Jensen, S. Liaaen, Acta Chemica Scandinavica (1403-1411)(1964), Pages: 1403-1411, "Bacterial Carotenoids. XV. On the Constitution of the Minor Carotenoids of Rhodopseudomonas. 5. The Structures of P518 (2,2'-Diketo-spirilloxanthin), OH-R (OH-Spheroidenone), and OH-Y (OH-Spheroidene)."
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