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Osage Orange Pigments. XIV. The Structure of Macluraxanthone 1a-c

✍ Scribed by Wolfrom, M. L.; Komitsky, F.; Fraenkel, G.; Looker, J. H.; Dickey, E. E.; McWain, P.; Thompson, A.; Mundell, P. M.; Windrath, O. M.

Book ID: 126282424
Publisher: American Chemical Society
Year: 1964
Tongue: English
Weight: 770 KB
Volume: 29
Category: Article
ISSN: 0022-3263
DOI: 10.1021/jo01026a041

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THE isolation of three crystalline, yellow, optically inactive pigments from the root bark of the osage orange (Maclura pomifera Rat. ) has been reported briefly. ' These are isolable from ether extractives of the root bark in a total yield of 0.6%. The one found in major amount and now designated m

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Abstract The crystal structure of a polymorph (α) of C.I. Pigment Yellow 5, α-(1-hydroxyethylidene) acetanilide-α-azo-(2′-nitrobenzene), C16H14O4-N4, has been determined by single crystal X-ray diffraction techniques. It crystallises in the monoclinic system with cell parameters a = 7.593 ∓ 0.001 Å,