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Cephem derivative
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Patent number 9,085,589
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Issue date Jul 21, 2015
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Shionogi & Co., Ltd.
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Hiroki Kusano
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C07 - ORGANIC CHEMISTRY
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3708477
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Patent number 3,708,477
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Issue date Jan 2, 1973
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C07 - ORGANIC CHEMISTRY
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3225038
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Patent number 3,225,038
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Issue date Dec 21, 1965
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C07 - ORGANIC CHEMISTRY