β Scribed by Lawrence J. Altman; Norman Silberman
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Tritium labelled hexamethyldisiloxane is a suitable material for the internal referencing of ^3^H NMR spectra. Such a referencing procedure is necessary where the instrument is not capable of scanning ^1^H resonance under identical experimental conditions. Hexamethyldisiloxane may be tr
## Abstract ^3^HβOchratoxins A, B, and C were obtained by tritiation of the toxins with tritiated water in acetic acid and platinum at 80Β° C overnight. The toxins were purified by solvent partition and thin layer chromatography with the recovery yield being 80% and the specific activity being 2.6 β
## Abstract Amineβoxide radical **1a** was efficiently converted to the corresponding __N__βhydroxyβamine **2a** with sodium dithionite in acetone/water. This reaction was used to develop a procedure for monitoring the NMR. spectra of sodium dithionite reduced amineβoxide radicals and of novel redu
## Abstract ^13^C NMR chemical shifts and ^13^Cο£Ώ^13^C couplings for six specifically labeled [^13^C] azobenzenes are reported. Coupling magnitudes depend on the position of labeling and the nature of the substituents.