Table 3.

The NMR signal assignment of metabolites in a feces fraction

Metabolite	δ 1H (ppm)	HSQC δ 1H–13C (ppm)	TOCSY δ 1H–1H (ppm)
2-Hydroxyglutarate	1.85	1.85, 33.55	1.86, 2.00; 1.86, 2.27; 1.85, 4.03
	2.00	1.99, 33.55	2.01, 1.85; 2.00, 2.26; 1.99, 4.03
	2.26	2.25, 36.35	2.27, 1.85; 2.25, 2.01; 2.26, 4.03
	4.03	4.03, 74.94	4.03, 1.86; 4.03, 2.01; 4.03, 2.26
Aspartate	2.69	2.71, 39.35	2.69, 2.81; 2.69, 3.91
	2.81	2.80, 39.34	2.82, 2.69; 2.80, 3.91
	3.90	3.91, 54.99	3.91, 2.70; 3.91, 2.81
Glutamate	2.10	2.11, 29.79	2.10, 2.36; 2.10, 3.78
	2.35	2.35, 36.22	2.35, 2.10; 2.35, 3.78
	3.77	3.77, 57.35	3.77, 2.10; 3.78, 2.36
Glutarate	1.79	1.78, 25.77	1.80, 2.20
	2.19	2.18, 40.08	2.20, 1.80
Glycine	3.57	3.57, 44.32	No signal
Lysine	1.48	1.48, 24.50	1.48, 1.74; 1.48, 1.92; 1.48, 3.03; 1.48, 3.77
	1.74	1.74, 29.11	1.74, 1.48; 1.74, 1.92; 1.74, 3.03; 1.74, 3.77
	1.92	1.92, 32.70	1.92, 1.48; 1.92, 1.74; 1.92, 3.03; 1.92, 3.77
	3.03	3.03, 41.82	3.03, 1.48; 3.03, 1.74; 3.03, 1.92; 3.03, 3.77
	3.77	3.77, 57.35	3.77, 1.48; 3.77, 1.74; 3.77, 1.92; 3.77, 3.03
Succinate	2.41	2.40, 36.97	No signal

HSQC heteronuclear single quantum correlation, TOSCY total correlation spectroscopy