Takeda; Tokuyama
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Ochiai
Journal of Organic Chemistry, 1953 , vol. 18, p. 534,541
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Ochiai; Okamoto
Yakugaku Zasshi, 1950 , vol. 70, p. 384,387
Chem.Abstr., 1951 , p. 2476
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Ishikawa
Proceedings of the Imperial Academy (Tokyo), 1944 , vol. 20, p. 599,603
Chem.Abstr., 1955 , p. 326

Ochiai et al.
Yakugaku Zasshi, 1943 , vol. 63, p. 280
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The Procter and Gamble Company
Patent: US2006/156485 A1, 2006 ;
Location in patent: Page/Page column 13 ;

Ishikawa
Proceedings of the Imperial Academy (Tokyo), 1944 , vol. 20, p. 599,603
Chem.Abstr., 1955 , p. 326