## Abstract A rapid and mild procedure for the preparation of [N‐7‐methyl‐^11^C] caffeine is described. Gaseous ^11^C‐methyl iodide wa led into dimethyl sulphoxide (DMSO), containing theophylline (1,3‐dimethylaxanthine) and sodium hydride. Purification of the reaction product was achieved by High P
Preparation of 11C-labeled 4-dimethylaminoantipyrine
✍ Scribed by G.-J. Meyer; T. Harms; H. Hundeshagen
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- French
- Weight
- 86 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract ^11^C‐Methyl labelled 1,1′‐dimethyl‐4,4′‐dipyridinium diiodide has been prepared by reaction of ^11^C‐iodomethane with 4,4′‐dipyridyl dihydrate. Radiochemical analysis of the product was by electrophoresis. The ^11^C‐iodomethane precursor was prepared rapidly from cyclotron produced ^11
## Abstract ^11^C‐labelled galactose, glycerol and mannitol have been prepared biosynthetically from ^11^C‐labelled carbon dioxide using species of marine algae. Following biosynthesis the labelled compounds are rapidly extracted from the algae and purified by liquid chromatography.
A procedure f o r l a b e l l i n g t h e novel a n a l g e s i c , meptazinol [ ( + ) Imethyl-3-ethyl-3-(~-hydroxyphenyl)tetrahydroazepine~, w i t h t h e p o s i t r o ne m i t t i n g r a d i o n u c l i d e , carbon-11 ( t t = 20.4 min) has been developed i n o r d e r t o permit t h e pharmacok
## Abstract We report the synthesis of ^11^C‐labelled choline using the reaction of “nocarrier‐added” ^11^C‐labelled methyliodide and 2‐amino‐(N,N‐dimethyl)‐ethanol. After determining the optimum temperature and duration for the reaction, we achieved a radiochemical yield of about 30% and the radio
## Abstract ^15^N labeled tetranitromethane, C(^15^NO~2~)~4~, was prepared from anhydrous nitric acid and acetic anhydride. A procedure for the preparation of the nitric acid from Na^15^NO~3~ is described. Tyrosine was nitrated with H^15^NO~3~ and its ^15^N NMR spectrum compared well with that of t