Compound | R | Initial aldose | Form in crystals | Tautomeric composition (%) in D2O | ||
Form B | Form A | Form C | ||||
2a | H | L-Arabinose | D | 10 | - | 90 |
2b | H | D-Xylose | D | 25 | - | 75 |
2c | CH3 | L-Rhamnose | B | 100 | - | - |
2d | CH2OH | D-Galactose | D | 15 | - | 85 |
2e | CH2OH | D-Glucose | B | 70 | - | 30 |
2f | CH2OH | D-Mannose | D | 10 | - | 90 |