title: A Stability-Indicating HPLC Method for the Determination of Memantine Hydrochloride in Dosage Forms through Derivatization with 1-Fluoro-2,4-dinitrobenzene.
abstract: Memantine is chemically a tricyclic amine and is used for Parkinson's disease and movement disorders. Although several HPLC methods with different derivatization reagents have been developed for the determination of memantine in biological fluids, there are some complications which limit the use of these methods in routine analysis of memantine in in vitro tests. We established a simple, sensitive, precise, and accurate HPLC method for the quantification of memantine in dosage forms. Pre-column derivatization of memantine was performed with 1-fluoro-2,4-dinitrobenzene and the reaction product was separated on a Nova-Pak C18 column. A mixture of acetonitrile and sodium dihydrogenphosphate (pH 2.5; 0.05 M) (70: 30, v/v) was used as the mobile phase. UV detection was performed at 360 nm. Forced degradation studies were performed on a powdered tablet sample of memantine hydro-chloride using acidic (0.1 M hydrochloric acid), basic (0.1 M sodium hydroxide), oxidative (10% hydrogen peroxide), thermal (105°C), photolytic, and humidity conditions. Good linearity (r(2)=0.999) was obtained over the range of 1-12 μg mL(-1) of memantine hydrochloride with acceptable within-day and between-day precision values in the range of 0.05-0.95%. The proposed method was used for the assay determination and dissolution rate study of memantine dosage forms with excellent specificity.
authors: Department of Research & Development, Osvah Pharmaceutical Co. Tehran, Iran.
authors: Hassan
authors: H
authors: Jalalizadeh
authors: Department of Research & Development, Osvah Pharmaceutical Co. Tehran, Iran.
authors: Mahdi
authors: M
authors: Raei
authors: Department of Research & Development, Osvah Pharmaceutical Co. Tehran, Iran.
authors: Razieh Fallah
authors: RF
authors: Tafti
authors: Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
authors: Hassan
authors: H
authors: Farsam
authors: Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. ; Department of Pharmacoeconomy and Pharmaceutical Administration, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
authors: Abbas
authors: A
authors: Kebriaeezadeh
authors: Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
authors: Effat
authors: E
authors: Souri
keywords: Dinitrofluorobenzene; Dosage forms; HPLC; Memantine; UV-detection