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Foeldi
Acta Chimica Academiae Scientiarum Hungaricae, 1953 , vol. 3, p. 501,508
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Tatsuoka; Miyamoto
Yakugaku Zasshi, 1949 , vol. 69, p. 294,297
Chem.Abstr., 1950 , p. 2513
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Merck and Co.
Patent: US2515465 , 1946 ;