ChemInform Abstract: THE 9-(4-OCTADECYLOXYPHENYLXANTHEN)-9-YL-GROUP. A NEW ACID-LABILE HYDROXYL PROTECTIVE GROUP AND ITS APPLICATION IN THE PREPARATIVE REVERSE-PHASE CHROMATOGRAPHIC SEPARATION OF OLIGORIBONUCLEOTIDES

1985 ◽  
Vol 16 (12) ◽  
Author(s):  
M. KWIATKOWSKI ◽  
J. CHATTOPADHYAYA
Keyword(s):  
Chromatographic Separation ◽  
Protective Group ◽  
Reverse Phase ◽  
Group A ◽  
Acid Labile

Studies on Chromatographic Fractioning by Cations Exchangers of a Bovine Hemoglobin Hydrolysate

2018 ◽  
Vol 69 (10) ◽  
pp. 2794-2798
Author(s):  
Alina Diana Panainte ◽  
Ionela Daniela Morariu ◽  
Nela Bibire ◽  
Madalina Vieriu ◽  
Gladiola Tantaru ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Amino Acids ◽  
Retention Time ◽  
Chromatographic Separation ◽  
Bovine Hemoglobin ◽  
Reverse Phase ◽  
Hplc System ◽  
Fast Flow ◽  
Hydrolysis Of ◽  
Phase Column

A peptidic hydrolysate has been obtained through hydrolysis of bovine hemoglobin using pepsin. The fractioning of the hydrolysate was performed on a column packed with CM-Sepharose Fast Flow. The hydrolysate and each fraction was filtered and then injected into a HPLC system equipped with a Vydak C4 reverse phase column (0.46 x 25 cm), suitable for the chromatographic separation of large peptides with 20 to 30 amino acids. The detection was done using mass spectrometry, and the retention time, size and distribution of the peptides were determined.

The 2-acetylthioethyl ester group: A versatile protective group for P-OH-groups

Tetrahedron ◽  
2018 ◽  
Vol 74 (52) ◽  
pp. 7426-7430 ◽  
Author(s):  
Jens C. Markwart ◽  
Frederik R. Wurm
Keyword(s):  
Ester Group ◽  
Protective Group ◽  
Oh Groups ◽  
Group A

The 3,4-dimethoxybenzyl group: A protective group for new 2-imino-imidazolidine derivates

1987 ◽  
Vol 28 (51) ◽  
pp. 6453-6456 ◽  
Author(s):  
D. Huber ◽  
G. Leclerc ◽  
J.D. Ehrhardt ◽  
G. Andermann
Keyword(s):  
Protective Group ◽  
Group A

Rapid separation of lanthanides and actinides on small particle based reverse phase supports

2010 ◽  
Vol 98 (5) ◽  
Author(s):  
Arpita Datta ◽  
N. Sivaraman ◽  
T. G. Srinivasan ◽  
P. R. Vasudeva Rao
Keyword(s):  
Ion Exchange ◽  
Fast Reactor ◽  
Small Particle ◽  
Chromatographic Separation ◽  
Reverse Phase Hplc ◽  
Reverse Phase ◽  
Rapid Separation ◽  
Dissolver Solution ◽  
Hplc Technique ◽  
Uranium Matrix

AbstractThis paper presents the results on the use of short columns (3−5 cm long) with small particle size (1.8 μm) for high performance liquid chromatographic separation of individual lanthanides and uranium from plutonium as well as uranium from thorium to achieve rapid separationsIn the present work, a dynamic ion-exchange chromatographic separation technique was employed using camphor-10-sulfonic acid (CSA) as the ion-pairing reagent and α-hydroxy isobutyric acid (α-HIBA) as the complexing reagent for the isolation of individual lanthanides as well as the separation of uranium from thorium.Uranium was separated from Pu(III) as well as Pu(IV) by reverse phase HPLC technique. The reverse phase HPLC was also investigated for the isolation and quantitative determination of uranium from thorium as well as lanthanide group from uranium.The dynamic ion-exchange technique using small particle support was demonstrated for measuring the concentrations of lanthanide fission products such as La, Ce, Pr, Nd and Sm in the dissolver solution of fast reactor fuel. Similarly, the assay of uranium in the dissolver solution of fast reactor was carried out using reverse phase HPLC technique. The rapid separation technique using reverse phase HPLC was also demonstrated for separation of lanthanides as a group from uranium matrix; samples of LiCl-KCl eutectic salt containing chlorides of lanthanides in uranium matrix (typically 1:2000) were analysed.

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