Sir, Latli and coworkers recently described a synthesis of tritium-labelled bilirubin by the reduction of biliverdin with sodium borotritiide. 1 They failed to note that an essentially identical, but faster and higher-yield, procedure was published in this journal by Hutchinson et al. in 1981 2 and
Addendum to: synthesis of tritium-labeled bilirubin
β Scribed by Bachir Latli
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- French
- Weight
- 35 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0022-2135
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β¦ Synopsis
Sir, it has been brought to our attention that in our manuscript published in JLCR 1 we neglected to cite an earlier procedure by Hutchinson et al. 2 We regret this oversight, although our paper described improvements over previous procedures. For example, our manuscript describes for the first time the synthesis of tritium-labeled bilirubin with specific activities ranging from 6.6 to 8.8 Ci/ mmol as well as HPLC methods for the purification and analysis of this material. In regards to the issue of the heterogeneity of our product; we believe that this simple, one step procedure is a useful alternative to the biosynthetically prepared material. The material that we prepared was actually similar to the commercially available bilirubin.
Thank you very much for bringing these concerns to our attention.
π SIMILAR VOLUMES
## Abstract Tritiumβlabeled bilirubin with specific activities ranging from 6.8 to 8.8βCi/mmol was prepared in a single step by reducing biliverdin dihydrochloride with sodium borotritide in ethanol. Copyright Β© 2008 John Wiley & Sons, Ltd.
## Abstract Mazindol was labeled with tritium in the 6,9 positions in low yield starting with dimethyl phthalateβ3,6β^3^H which was prepared by reduction of dimethyl 3βchlorophthalate with tritium gas using 10% palladium on charcoal as a catalyst. The labeled dimethyl phathalate was hydrolisized wi
## Abstract Tritium labeled zomepirac with a specific activity of 85 Ci/mol was prepared by selective alkylation of the penultimate desmethyl precursor using methyl iodideβ^3^H~3~. The alkylation reaction was explored using various bases and solvent media.