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Start Over Author "Dreassi E" Journal pharmaceutica acta helvetiae
4 results on '"Dreassi E"'

3. Thin layer densitometry in the quantitative assay of drugs. Note V--Assay of reserpine and chlorthalidone in the presence of the potential impurities of their solid pharmaceutical forms.

Author

Corti P, Corbini G, Dreassi E, Murratzu C, and Celesti L

Subjects
Chromatography, Thin Layer, Densitometry, Drug Contamination, Tablets, Chlorthalidone analysis, Reserpine analysis
Abstract

Densitometric detection of compounds separated by thin layer was applied to the assay of a mixture of reserpine and chlorthalidone and their possible impurities. The method of analysis gave satisfactory results in the quality control of pharmaceutical preparations. Good results were obtained in urine tests for the detection of chlorthalidone, reserpine and methylreserpate. The times for the development of fluorescence in reserpine and methylreserpate directly in the chromatographic plate, are also described.

Published
1990

4. Application of NIRS to the quantity control of pharmaceuticals ketoprofen assay in different pharmaceutical formulae.

Author

Corti P, Dreassi E, Murratzu C, Corbini G, Ballerini L, and Gravina S

Subjects
Chromatography, High Pressure Liquid, Quality Control, Ketoprofen analysis, Phenylpropionates analysis
Abstract

The possibility of using reflectance NIRS to assay 2-(benzoylphenyl)-propionic acid (Ketoprofen) in solid-state and gel preparations is investigated. The number of samples and amplitude of the percentage content distribution of the samples is examined in order to define the best possible calibration system.

Published
1989

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