## Abstract The monomerโdimer equilibrium of retinoic acid in carbon tetrachloride was studied by ^1^H and ^13^C NMR spectroscopy. The dimer dissociation constant at 24ยฐC was determined to be 0.38 mM from a fit of the changes in the carboxylic acid carbon chemical shift as a function of concentrati
โฆ LIBER โฆ
Biosynthesis of bitter acids in hops : A 13C-NMR and 2H-NMR study on the building blocks of humulone
โ Scribed by Markus Goese; Klaus Kammhuber; Adelbert Bacher; Meinhart H. Zenk; Wolfgang Eisenreich
- Book ID
- 114429979
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 903 KB
- Volume
- 263
- Category
- Article
- ISSN
- 1432-1327
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## Abstract The tautomerism of 5(6)โmethoxyโ2โ{[(4โmethoxyโ3,5โdimethylโ2โpyridinyl)methyl] sulfinyl}โ1__H__โbenzimidazole (omeprazole) was determined in solution, __K__~__T__~ = 0.59 in THF at 195 K, in favor of the 6โmethoxy tautomer. The assignment of the signals was made by comparison with its
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