Disposition of14C-labelled endotelon in humans
β Scribed by A. Benakis; C. Schopfer; J. Ritschard
- Publisher
- Springer-Verlag
- Year
- 2008
- Tongue
- English
- Weight
- 719 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0378-7966
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## Abstract The synthesis of Asaley labelled with ^14^C in the mustard (Asaleyβmustβ^14^C) or the leucine (Asaleyβleuβ^14^C) moiety is described. In the former, ethyl paminoβN^Ξ±^βacetylβDLβphenylalanylβLβleucinate was reacted with ethylene oxide(U)β^14^C to give the bis(hydroxyethyl)amino analogue,
A direct and a diffusion method to be applied when measuring ~4C labelled carbon dioxide by productivity measurements in natural water have been described. The labelled carbonate was trapped by t N solutions of NaOH, KOH or Ba(OH h. Results comparable to those obtainable by the biological method are