Simple procedure involving derivatisation and thin-layer chromatography for the estimation of trace levels of halogenated alkylamines and their hydrolysis products in drug substances and formulations

1991 ◽  
Vol 543 ◽  
pp. 211-219 ◽  
Author(s):  
P.H. Leight ◽  
M.J. Bowker
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Simple Procedure ◽  
Drug Substances ◽  
Hydrolysis Products ◽  
Layer Chromatography

scholarly journals Separation of Berberine Hydrochloride and Tetrahydropalmatine and Their Quantitative Analysis with Thin Layer Chromatography Involved with Ionic Liquids

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Jing Lu ◽  
Hong-yan Ma ◽  
Wei Zhang ◽  
Zhi-guo Ma ◽  
Shun Yao
Keyword(s):  
Ionic Liquids ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Silica Gel ◽  
Simple Procedure ◽  
Berberine Hydrochloride ◽  
Chinese Patent ◽  
Ft Ir ◽  
First Time ◽  
Layer Chromatography

[BMIM]OH was used in mobile and stationary phase of thin layer chromatography (TLC) to analyze berberine hydrochloride and tetrahydropalmatine for the first time. Supported imidazole ionic liquid with hydroxide ion on silica gel (SiO2·Im+·OH−) was synthesized through simple procedure and characterized by Fourier transform infrared spectroscopy (FT-IR), elemental analysis, and scanning electron microscope (SEM). Moreover, on the plates prepared by SiO2·Im+·OH−, the contents of the above alkaloids in the Chinese patent medicine (CPM) of “Stomacheasy” capsule were successfully determined by TLC scanner. The key conditions and chromatographic behaviors were also investigated in detail. According to similar ways, ionic liquids (ILs) also can be used in other planar chromatographies in two modes. This study is expected to be helpful in expanding the application of IL and its bonded silica gel in TLC separation field.

Thin-Layer Chromatography for Insecticide Analysis

1963 ◽  
Vol 46 (2) ◽  
pp. 250-261
Author(s):  
Kenneth C Walker ◽  
Morton Beroza
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Simple Procedure ◽  
Rf Values ◽  
Solvent Systems ◽  
Layer Chromatography

Abstract A single, simple procedure has been worked out for the analysis of 62 pesticides by thin-layer chromatography. Rf values in 19 different solvent systems and chromogenic reagents for making the pesticides visible are presented, together with Rf values of dyes that may be used as standards.

PHOSPHOLIPID COMPONENTS EXTRACTED FROM SASKATCHEWAN SOILS

1971 ◽  
Vol 51 (1) ◽  
pp. 19-22 ◽  
Author(s):  
C. G. KOWALENKO ◽  
R. B. McKERCHER
Keyword(s):  
Fatty Acid ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Phosphatidyl Choline ◽  
Phosphatidyl Ethanolamine ◽  
Total Phospholipid ◽  
Plant Residues ◽  
Hydrolysis Products ◽  
Layer Chromatography ◽  
Choline Phosphatidyl

Soil phospholipids and their hydrolysis products, examined by thin-layer chromatography and selective sprays, revealed two major components, phosphatidyl ethanolamine and phosphatidyl choline. Phosphatidyl choline represented about 40% of the total phospholipid P and phosphatidyl ethanolamine about 30%. Small quantities of lyso-phosphatidyl choline were isolated from one soil. It is suggested that a study of the fatty acid constituents of phospholipids may indicate whether their source is largely from microorganisms or plant residues.

Separation of novocaine and its hydrolysis products by thin-layer chromatography

1976 ◽  
Vol 10 (2) ◽  
pp. 267-268
Author(s):  
M. Ya. Pormale ◽  
I. N. Rozental ◽  
N. A. Kashkina
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Hydrolysis Products ◽  
Layer Chromatography
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