Table 2. NMR peak assignments of pure disodium (R/S)-2-hydroxyglutarate at pH 7.0.

Assignment	1H shift (ppm, with multiplicity)	13C shift (ppm)
1COOH	-	184.2
2CH(OH)	4.02 (q)	75.0
3CH2	2.00 (m), 1.84 (m)	33.9
4CH2	2.29 (m), 2.24 (m)	36.4
5COOH	-	185.8

Note. ppm = parts per million, q = quartet, m = other multiplet