Preparation and characterization of uniform particles of flufenamic acid and its calcium and barium salts.
Uniform fully dispersed particles of flufenamic acid, a widely used anti-inflammatory drug, were prepared by two different methods. In the first one, the drug solution in organic solvents was added to a non-solvent (water or aqueous solutions of stabilizers); while in the second procedure the drug was precipitated by acidifying its basic aqueous solutions. In addition calcium and barium salts of uniform spherical particles were obtained by precipitation in aqueous basic solutions of the drug. These salts are supposed to improve the drug reactivity. The prepared dispersions of the drug and its salts were examined by scanning electron microscopy, X-ray diffractometry and electrophoresis.
Center for Advanced Materials Processing, Clarkson University, Potsdam, NY 13699-5814, USA.
Amr Ali
AA
Mohamed
Egon
E
Matijević
D000893:Anti-Inflammatory Agents / Q000737:chemistry*; D017609:Barium Compounds / Q000737:chemistry*; D002122:Calcium Chloride / Q000737:chemistry*; D002482:Cellulose / Q000031:analogs & derivatives / Q000737:chemistry; D002712:Chlorides / Q000737:chemistry*; D003102:Colloids; D005439:Flufenamic Acid / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D017830:Octoxynol; D010316:Particle Size; D011092:Polyethylene Glycols / Q000737:chemistry; D053838:Scattering, Small Angle; D012995:Solubility; D012997:Solvents; D013499:Surface Properties; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
D000893:Anti-Inflammatory Agents; D017609:Barium Compounds; D002712:Chlorides; D003102:Colloids; D012997:Solvents; D014867:Water; C024986:barium chloride; D011092:Polyethylene Glycols; D005439:Flufenamic Acid; D017830:Octoxynol; D002482:Cellulose; C010615:Nonidet P-40; C008079:hydroxypropylcellulose; D002122:Calcium Chloride