Calculation of the gastric absorption rate constants of 5-substituted barbiturates through theR m values or substituent ΔR m constants in reversed-phase partition chromatography

1975 ◽  
Vol 3 (2) ◽  
pp. 115-141 ◽  
Author(s):  
José M. Plá-Delfina ◽  
Joaquín Moreno ◽  
Juan Durán ◽  
Alfonso del Pozo
Keyword(s):  
Rate Constants ◽  
Absorption Rate ◽  
Reversed Phase ◽  
Partition Chromatography ◽  
Phase Partition ◽  
Absorption Rate Constants

Constitution of the surface lipid from the leaves of Brassica oleracea (var. capitata ) ( Winnigstadt )) - III. Nonacosane and its derivatives

1963 ◽  
Vol 158 (973) ◽  
pp. 553-565 ◽  
Keyword(s):  
Liquid Chromatography ◽  
Secondary Alcohol ◽  
Reversed Phase ◽  
Gas Liquid Chromatography ◽  
Surface Lipid ◽  
Partition Chromatography ◽  
Carbonyl Groups ◽  
Phase Partition ◽  
Main Components ◽  
Villiger Oxidation

The constitution of the hydrocarbon fraction has been determined by gas/liquid chromatography. Ten alkanes containing both odd and even numbers of carbon atoms have been found. Nonacosane (93 %) and hentriacontane (3 %) are the main components. The constitution of the nonacosane derivatives has been elucidated by subjecting each fraction to modified Baeyer-Villiger oxidation and identifying the key fragments by a combination of adsorption and reversed-phase partition chromatography on films of adsorbent supported on glass plates. A pair of isomers has been found in each group. Those from the ketone and secondary alcohol are derived by substitution of oxygen atoms in the 10- and 15-positions. In the ketol the oxygen substituents are also in the 10- and 15-positions and the isomers are derived by interchanging the positions of the hydroxyl and carbonyl groups.

Separation of Uranium by Reversed-Phase Partition Chromatography on a Kel-F Column

1961 ◽  
Vol 33 (11) ◽  
pp. 1547-1552 ◽  
Author(s):  
A. G. Hamlin ◽  
B. J. Roberts ◽  
W. Loughlin ◽  
S. G. Walker
Keyword(s):  
Reversed Phase ◽  
Partition Chromatography ◽  
Phase Partition
Sign in / Sign up

Export Citation Format

Share Document