Quantitative analysis of d-tubocurarine chloride in curare by column liquid chromatography.
J Chromatogr
; 142: 715-23, 1977 Nov 11.
Article
en En
| MEDLINE
| ID: mdl-914944
An improved quantitative analysis of d-tubocurarine chloride in the plant extract curare is presented. Gradient high-performance liquid chromatography on a hydrophobic stationary phase was found to be very suitable for the analysis of quaternary ammonium bases such as the complex mixture of curare alkaloids. Owing to the residual free silanol groups on the modified silica surface, the curare alkaloids are eluted from a reversed-phase column only if an electrolyte is added to the mobile phase. In order to optimize the separation, the effects of pH, the nature of the cation in the buffer and the concentration of the buffer of the retention of the alkaloids were investigated. Using a tetramethylammonium phosphate buffer at pH 4 in a gradient of water-methanol, undesirable retardation effects on the reversed-phase column could be suppressed sufficiently. As a result, an accurate method for the determination of d-tubocurarine chloride in curare was obtained. The coefficient of variation of this analysis is only 1.3%.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Tubocurarina
/
Curare
Idioma:
En
Revista:
J Chromatogr
Año:
1977
Tipo del documento:
Article
Pais de publicación:
Países Bajos