Chi; Chang
Journal of the American Chemical Society, 1938 , vol. 60, p. 1721

Baker et al.
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Chi et al.
Journal of the American Chemical Society, 1939 , vol. 61, p. 3377

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Neurogen Corporation, A Corporation of the State of Delaware
Patent: US2004/102457 A1, 2004 ;
Location in patent: Page 16 ;
US 20040102457 A1

Chi; Chang
Journal of the American Chemical Society, 1938 , vol. 60, p. 1721
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Chi; Ling
Huaxue Xuebao, 1956 , vol. 22, p. 3,11
Scientia Sinica (English Edition), 1956 , vol. 5, p. 205,216
Chem.Abstr., 1958 , p. 5419