## Abstract A selective and quantitative method was developed for a microscale preparation of 4‐thiouracil‐2‐^14^C by the direct thiation of uracil‐2‐^14^C. From pyridine, dioxane, and tetralin as the thiation solvents, the best yield was obtained in dioxane (96.6% of 4‐thiouracil‐2‐^14^C). The sim
Preparation of 2,3-dinitrilo-1,4-dithia-9,10-anthraquinone labelled with 14C or 35S or 14C+35S
✍ Scribed by J. Šeda; M. Fuad; R. Tykva
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- French
- Weight
- 424 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
A method was developed for the preparation of 2,3‐dinitrilo‐1,4‐dithia‐9, 10‐anthraquinone labelled with ^14^C or ^35^S or ^14^C+^35^S on a milligram scale with the use of the semiconducto‐graphic detection. The exchange of the ^35^S radionuclide in various stages of the preparation was examined in detail. By the present method, the following activities were obtained: 88 Ci of ^14^C/mol or 44 Ci of ^35^S/mol or 1.46 Ci of ^14^C + 75 Ci of ^35^S/mol.
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## Abstract 3‐L‐Pyroglutamyl‐L‐thiazolidine‐4‐carboxylic acid (Pidotimod), a new immunostimulating agent, has been prepared labelled with ^14^C and ^35^ isotopes starting from L‐[U‐^14^C]‐glutamic acid 5 and L‐[^35^S]‐cysteine hydrochloride 6, respectively. In the first synthesis, L‐[U‐^14^C]‐5 is
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The blue mixed-crystal title compound Na 15 [Mo VI 126 Mo V 28 O 462 H 14 (H 2 O) 70 ] 0.5 [Mo VI 124 Mo V 28 O 457 H 14 (H 2 O) 68 ] 0.5 ´ca. 400 H 2 O º Na 15 [1 a] 0.5 [1 b] 0.5 ´ca. 400 H 2 O 1, which crystallizes in the triclinic space group P 1 (a = 30.785(2), b = 32.958(2), c = 47.318(3) A Ê