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. Author manuscript; available in PMC: 2009 Mar 30.
Published in final edited form as: J Am Chem Soc. 2008 Mar 12;130(13):4212–4213. doi: 10.1021/ja7101218

Figure 3.

Figure 3

Typical 13C spectrum of 3.5 mM 1-13C-succinate-d2 hyperpo-larized at pH = 2.9. The chart on the left shows the typical reproducibility achieved; a series of three experiments was conducted within 30 min yielding 17.6 ± 1.4% polarization. Natural abundance ethanol with 207 mM of 13C per carbon site is used as a reference. Spectra are acquired at 4.7 T with a Bruker Avance console and home-built double resonant probe.15