Use of HPLC for increasing the molar specific activities of tritium-labelled nucleosides
โ Scribed by B. K. Kudelin; L. V. Gavrilina; Yu. L. Kaminski
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- French
- Weight
- 250 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
The possibility of chromatographic separation of different isotopic forms of tritiated nucleosides has been demonstrated. Using a reversedโphase column in 3โ5% solutions of ethanol in water the labelled nucleosides eluted ahead of corresponding unlabelled analogs. Such isotope effects allow simultaneous fine purification of nucleosides and its fractionation according to molar specific activity value.
๐ SIMILAR VOLUMES
## Abstract Tritiated hydrocarbons may be prepared by Kolbe electrolysis of carboxylic acids which have been labelled by catalytic exchange in tritiated water.
## Department of Chemistry Labelled Compounds and Metabolite Synthesis Group 31, avenue Paul Vaillant-Couturier 92220 BAGNEUX (FRANCE) SmOuRY The synthesis of betaxolol, a new 8-blocking agent. labelled with tritium in high specific activity ('19 Ci/mmol) is described. The tritium was incorporated
Chlorisondamine is a bisquaternary ganglion-blocking nicotinic antagonist that accumulates in dopaminergic, serotonergic, and noradrenergic cell bodies; the mechanism of uptake and time-course of retrograde transport are not known. Chlorisondamine could possibly be taken into monoaminergic neurons w
## Abstract The specific tritium labelling of betaโadrenoceptor antagonists of the general structure ArOCH~2~CH(OH)CH~2~NHR is described. The tritium label is introduced in the 2โposition in the aminohydroxypropoxy sideโchain starting from ArOCH, an intermediate in the synthesis of the unlabelled c
We describe a method of preparation of high specific activity tritium-labelled leukotriene (LT) B 4 from [5,6,8,9,11,12,14, H] arachidonic acid (AA; 6.66 TBq/mmol) utilizing a LTB 4 -synthesizing enzyme system from rat basophilic leukemia (RBL-1) cells. It was shown that both cyclooxygenase inhibito