Merck
CN
  • Preparation and characterization of uniform particles of flufenamic acid and its calcium and barium salts.

Preparation and characterization of uniform particles of flufenamic acid and its calcium and barium salts.

Journal of colloid and interface science (2012-06-19)
Amr Ali Mohamed, Egon Matijević
ABSTRACT

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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Barium chloride, AnhydroBeads, −10 mesh, 99.95% trace metals basis
Sigma-Aldrich
Barium chloride, AnhydroBeads, −10 mesh, 99.999% trace metals basis
Sigma-Aldrich
Barium chloride, 99.9% trace metals basis
Sigma-Aldrich
Triton X-405 solution, 70% in H2O
Sigma-Aldrich
Barium chloride, 99.999% trace metals basis
Sigma-Aldrich
Hydroxypropyl cellulose, average Mw ~1,000,000, powder, 20 mesh particle size (99% through)
Sigma-Aldrich
Barium chloride dihydrate, ≥99%
Sigma-Aldrich
Barium chloride dihydrate, ACS reagent, ≥99%
Sigma-Aldrich
Triton X-114
Sigma-Aldrich
Triton X-165 solution, Non-ionic, CMC-0.43 mM, suitable for electrophoresis, cloud point >100 °C
Sigma-Aldrich
IGEPAL® CA-630, viscous liquid
Sigma-Aldrich
Triton X-114, laboratory grade
Supelco
Flufenamic acid, analytical standard, for drug analysis
Sigma-Aldrich
Hydroxypropyl cellulose, average Mw ~80,000, average Mn ~10,000, powder, 20 mesh particle size (99% through)
Supelco
IGEPAL® CA-630
Sigma-Aldrich
IGEPAL® CA-720, average Mn ~735
Sigma-Aldrich
Barium chloride dihydrate, ≥99.999% trace metals basis
Sigma-Aldrich
Hydroxypropyl cellulose, average Mw ~370,000, powder, 20 mesh particle size (99% through)
Sigma-Aldrich
Hydroxypropyl cellulose, average Mw ~100,000, powder, 20 mesh particle size (99% through)
Sigma-Aldrich
IGEPAL® CA-630, for molecular biology