Chemical shift δ (ppm) | |||
L-Arginine maleate dihydrate | L-Arginine | Maleic acid | Group identification |
174.27 | 175.38 | - | -COOH- |
170.81 | - | 166.53 | -COOH- |
156.71 | 157.85 | - | -NH=C─NH2- |
134.35 | - | 129.99 | -CH- |
54.24 | 55.45 | - | -CH─NH2- |
40.45 | 41.64 | - | -CH2- |
27.49 | 28.77 | - | -CH2- |
23.84 | 25.03 | - | -CH2- |