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Cephalosporin derivatives
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Patent number 4,987,129
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Issue date Jan 22, 1991
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Sankei Pharmaceutical Co., Ltd.
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Shigeo Shimizu
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C07 - ORGANIC CHEMISTRY
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Cephalosporin derivatives
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Patent number 4,808,711
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Issue date Feb 28, 1989
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Sankei Pharmaceutical Co., Ltd.
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Shigeo Shimizu
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C07 - ORGANIC CHEMISTRY
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Cephalosporins
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Patent number 4,436,904
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Issue date Mar 13, 1984
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Kanto Ishi Pharmaceutical Co., Ltd.
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Shigeo Shimizu
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C07 - ORGANIC CHEMISTRY