Crystalline Microparticles of a Beta-Agonist Coated with a Fatty Acid

Abstract

Crystalline microparticles consisting of a phenylalkylamino beta2-adrenergic agonist coated with a C 12-C20 fatty acid to be used for the preparation of pharmaceutical aerosol formulations in form of suspension in a liquefied propellant gas or powder formulations

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