Table 1. Apparent spin-lattice relaxation times (T₁) for various hyperpolarized molecules at 1 Tesla compared to previously published values.

Compound	HP T1 at 1T	Literature T1
[1-13C] pyruvate	71.3 ± 1.8s	40.0 s (9.4T)16
[1-13C] glutamate	66.5 ± 6.4s	33.9 s (9.4T)17
[1-13C] oxalate	66.7 ± 7.0 s	n/a
[1-13C] lactate	42.9 ± 4.2 s	33 s (14.1T)18
[13C-15N] urea	50.7 ± 1.8 s	44 s (3T)19
[1-13C] methionine	47.6 ± 2.8 s	17 s (9.4T)20
[1-13C] dehydroascorbate	75.1 ± 3.1 s	57 s (3T)21

All metabolites were dissolved in a buffered solution at pH = 7.4 and measurements performed at 25 °C.