Chromatographic analysis of methyl ethers of 2-amino-2-deoxy-D-glucopyranose

1969 ◽  
Vol 47 (21) ◽  
pp. 4091-4093 ◽  
Author(s):  
M. B. Perry ◽  
Ann C. Webb
Keyword(s):  
Liquid Chromatography ◽  
Acetic Anhydride ◽  
Paper Chromatography ◽  
Methyl Ether ◽  
Sodium Borohydride ◽  
Chromatographic Analysis ◽  
Gas Liquid Chromatography ◽  
Derivatives Of

The mono-, di-, and tri-O-methyl ether derivatives of 2-amino-2-deoxy-D-glucopyranose have been analyzed by gas–liquid chromatography of their fully acetylated 2-acetamido-2-deoxy-D-glucitol derivatives which were prepared from the glycoses by reduction with sodium borohydride followed by acetylation with acetic anhydride. The methyl ethers of 2-amino-2-deoxy-D-glucopyranose were also characterized by degradation with ninhydrin to the corresponding methyl ether derivatives of D-arabinose which were identified by paper chromatography.

Paper Chromatographic Analysis of Chlorophenoxy Acids and Esters in Wheat

1964 ◽  
Vol 47 (2) ◽  
pp. 343-345
Author(s):  
George Yip
Keyword(s):  
Liquid Chromatography ◽  
Paper Chromatography ◽  
Chromatographic Analysis ◽  
Mobile Phase ◽  
Mineral Oil ◽  
Gas Liquid Chromatography ◽  
Immobile Phase ◽  
Rf Values ◽  
Chlorophenoxy Acids

Abstract 2,4-D, MCP, 2,4-DB, 2,4,5-T, 2,4,5-TP, and esters of 2,4-D can be detected as residues on wheat by paper chromatography after cleanup. The cleaned up samples are also suitable for analysis by gas-liquid chromatography. Rf values are presented for each chlorophenoxy acid and ester. Dimethylformamide in ether (35%) as immobile phase and 2,2,4-trimethylpentane as mobile phase give better resolution of the methylated acids than 10% mineral oil in ether (immobile phase) and 50% acetonitrile in water (mobile phase).

scholarly journals Gas-liquid chromatography of dialkyl, alkyl acyl, and diacyl derivatives of glycerol

1969 ◽  
Vol 10 (1) ◽  
pp. 128-131
Author(s):  
Randall Wood ◽  
W.J. Baumann ◽  
Fred Snyder ◽  
H.K. Mangold
Keyword(s):  
Liquid Chromatography ◽  
Gas Liquid Chromatography ◽  
Derivatives Of

Screening for urinary oligosaccharides: a quantitative procedure.

1978 ◽  
Vol 24 (4) ◽  
pp. 669-674 ◽  
Author(s):  
P Purkiss ◽  
R C Hughes ◽  
R W Watts
Keyword(s):  
Liquid Chromatography ◽  
Age Groups ◽  
Normal Subjects ◽  
Gel Chromatography ◽  
Gas Liquid Chromatography ◽  
Complex Carbohydrates ◽  
Derivatives Of ◽  
Quantitative Procedure ◽  
Urinary Oligosaccharides

Abstract A method for screening urine for abnormalities in glycoconjugate excretion is presented. An oligosaccharide-containing fraction is isolated from urine by gel chromatography and the carbohydrate-containing components in this fraction are degraded to monosaccharides, suitable derivatives of which are analyzed by gas-liquid chromatography. A pattern which characterizes the monosaccharides originating in complex carbohydrates in urine is thus obtained. Data obtained by applying this method to normal subjects in various age groups are presented and the applicability of the method and its limitations are illustrated by the use of examples from patients with previously diagnosed disorders of glycoconjugate metabolism.

Thin-Layer and Gas-Liquid Chromatography of Some Indanol Derivatives of Pharmaceutical Interest

1969 ◽  
Vol 58 (7) ◽  
pp. 880-881 ◽  
Author(s):  
P.R. Bhandari ◽  
H. Walker
Keyword(s):  
Liquid Chromatography ◽  
Thin Layer ◽  
Gas Liquid Chromatography ◽  
Derivatives Of

Fast Cleanup of Difficult Substrates for Determination of Fenitrothion and Some Derivatives

1981 ◽  
Vol 64 (6) ◽  
pp. 1470-1473
Author(s):  
Patrick Haché ◽  
René Marquette ◽  
Gilles Volpé ◽  
Victorin N Mallet
Keyword(s):  
Liquid Chromatography ◽  
Ethyl Acetate ◽  
Parent Compound ◽  
Chicken Liver ◽  
Gas Liquid Chromatography ◽  
Fast Recovery ◽  
Simple Method ◽  
Flame Photometric Detector ◽  
Derivatives Of

Abstract A simple method is described for the fast recovery of fenitrothion, an organophosphorus insecticide, from soil, chicken liver, urine, clams, and pine needles. The substrate is homogenized with acetonitrile or methanol, diluted with water, and passed through a column containing Amberlite XAD-7. Fenitrothion is recovered quantitatively by eluting with 4 portions of 25 mL ethyl acetate. After evaporation, the compound is determined quantitatively by gas-liquid chromatography with a flame photometric detector. The procedure is also suitable for some derivatives of fenitrothion, namely, fenitrooxon and S-methylfenitrothion. As low as 0.05 ppm of the parent compound may be determined.

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