Novel crystal of piperacillin sodium

Details Novel crystal of piperacillin sodium Novel crystal of piperacillin sodium

C - Chemistry, Metallurgy

07

D

C07D 499/68 (2006.01) A61K 9/14 (2006.01) B01D 9/00 (2006.01) B01D 9/02 (2006.01)

Patent

CA 2676803

Disclosed are a novel crystal of piperacillin sodium which has diffraction angles of 3.7°, 5.5°, 7.3°, 11.6°, 14.5° and 18.0° and a novel crystal of piperacillin sodium which has diffraction angles of 5.6°, 7.8°, 12.3°, 15.5°, 17.5°, 23.3°, 24.8° and 28.5° expressed by 2.theta. in the powder X-ray diffraction analysis. The crystals have excellent stability and solubility and a low water-absorbing property, is extremely easy to be handled in the production process for a medicinal substance and in the packing during the preparation process for a pharmaceutical product. A pharmaceutical preparation for injection comprising any one of the crystals is useful.

L'invention porte sur un nouveau cristal de pipéracilline sodique qui a des angles de diffraction de 3,7°, 5,5°, 7,3°, 11,6°, 14,5° et 18,0° et sur un nouveau cristal de pipéracilline sodique qui a des angles de diffraction de 5,6°, 7,8°, 12,3°, 15,5°, 17,5°, 23,3°, 24,8° et 28,5° exprimés par 2.theta. dans l'analyse de diffraction des rayons X sur poudre. Les cristaux ont d'excellentes stabilité et solubilité et une faible propriété d'absorption d'eau, ils sont extrêmement faciles à manipuler dans le procédé de fabrication d'une substance médicamenteuse et dans le conditionnement pendant le procédé de préparation d'un produit pharmaceutique. L'invention porte également sur une préparation pharmaceutique pour injection comprenant l'un quelconque des cristaux.

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