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1.Karen M. Button, Robert A. Gossage, Hilary A. Jenkins, Tayseer Mahdi, Sanja Resanović
On the purity of 2-[ortho-anilinyl]-1,3-benzoxazole derived from 2H-3,1-benzoxazine-2,4(1H)dione (isatoic anhydride)
Journal of Heterocyclic Chemistry
Volume 47, Issue 2, pages 268–271, March 2010
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http://dx.doi.org/10.1002/jhet.326
