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Saintopin derivatives
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Patent number 5,510,501
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Issue date Apr 23, 1996
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Kyowa Hakko Kogyo, Co. Ltd.
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Hirofumi Nakano
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C07 - ORGANIC CHEMISTRY
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2283438
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Patent number 2,283,438
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Issue date May 19, 1942
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C07 - ORGANIC CHEMISTRY
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2203339
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Patent number 2,203,339
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Issue date Jun 4, 1940
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C07 - ORGANIC CHEMISTRY