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- W4375828051 abstract "For the simultaneous determination of linagliptin and metformin in pharmaceutical formulations, two spectrophotometric procedures were described that were direct, accurate, and precise. The first was based on the H-point standard addition method (HPSAM) in which a standard solution of linagliptin was added to a mixture of linagliptin and metformin to monitor the absorbance at the wavelength pair of 231.7 nm and 243.4 nm. Linearity, accuracy, and precision were accepted over the concentration range of 0-3.2 μg/mL and 0.8 - 2.8 μg/ mL for linagliptin and metformin, respectively. In the second method, the simultaneous equation method (Vierodt᾿s method) was developed and validated, where two wavelengths 226 and 238 nm of linagliptin and metformin, respectively, were chosen to form the simultaneous equation. The results of applying Vierodt's method showed that linagliptin and metformin could be quantified simultaneously in the concentration range of 0 - 25 μg/mL and 0 -20 μg/mL, respectively. These methods have been successfully applied to the simultaneous determination of linagliptin and metformin in various synthetic mixtures, and pharmaceutical products. Key words: Linagliptin ; Metformin ; H-Point Standard Addition Method ; Vierodt᾿S Method; Simultaneous Determination" @default.
- W4375828051 created "2023-05-09" @default.
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- W4375828051 date "2023-02-15" @default.
- W4375828051 modified "2023-10-08" @default.
- W4375828051 title "SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF LINAGLIPITIN AND METFORMIN USING H-POINT STANDARD ADDITION AND VIERODT᾿S METHODS" @default.
- W4375828051 doi "https://doi.org/10.47832/minarcongress7-18" @default.
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