Crystalline 1-methylcarbapenem derivatives
AssigneeSankyo Company, Limited
InventorsIsao Kawamoto, Yasuo Shimoji, Hiroshi Fukuhara
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Abstract
This invention provides crystalline forms of a 1-methylcarbapenem derivative of formula (I) or of pharmaceutically acceptable salts thereof. 1 The crystalline forms of the 1 -methylcarbapenem derivative exhibit excellent antibiotic activity against various bacterial strains and sufficient stability for practical use.
Claims15
A 1-methylcarbapenem derivative of formula (I) or a pharmaceutically acceptable salt thereof in crystalline form:
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A 1-methylcarbapenem derivative of formula (I-1) in crystalline form:
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A 1-methylcarbapenem derivative of formula (I-2) in crystalline form:
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A 1-methylcarbapenem derivative of formula (I) in crystalline form:
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A 1-methylcarbapenem derivative of formula (I-3) in crystalline form:
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Dependencies are inferred from the claim text.