Figure 3.
(A) 1T 13C-NMR spectra (3s repetition, 10° pulse-angle, every 3rd spectrum shown) of HP [13C,15N2]-urea dissolved in H2O or D2O, pH or pD 7.4, 25–35°C. (B) T2 decay curve for HP [13C,15N2]-urea in H2O or D2O at 25–35°C.
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