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19-Nor-steroids
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Patent number 6,790,971
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Issue date Sep 14, 2004
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Aventis Pharma S.A.
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Andrè Claussner
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C07 - ORGANIC CHEMISTRY
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19-nor-steroids
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Patent number 5,707,982
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Issue date Jan 13, 1998
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Roussel Uclaf
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Andre Claussner
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C07 - ORGANIC CHEMISTRY
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19-nor-steroid esters
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Patent number 5,276,023
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Issue date Jan 4, 1994
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Roussel Uclaf
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Martine Moguilewsky
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C07 - ORGANIC CHEMISTRY
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Novel steroids
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Patent number 5,084,450
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Issue date Jan 28, 1992
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Roussel Uclaf
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Martine Gaillard-Kelly
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C07 - ORGANIC CHEMISTRY