Compound | R | Initial aldose | Form in crystals | Tautomeric composition (%) in D2O | ||
Form B | Form A | Form C | ||||
3a | H | L-Arabinose | E | 65 | 5 | 30 |
3b | H | D-Xylose | E | 50 | 10 | 40 |
3c | H | D-Ribose | E | 70 | 10 | 20 |
3d | CH2OH | D-Galactose | B | 70 | 5 | 25 |
3e | CH2OH | D-Glucose | B | 85 | 5 | 10 |
3f | CH2OH | D-Mannose | B | 75 | 5 | 20 |