TABLE 1.
Chemical shifts and relative resonance areas
| Resonance Areas
|
||||
|---|---|---|---|---|
| Letter and Structure | Chemical Group | Chemical Shift | Marrow | Subcutaneous |
| ppm | ||||
| A (methyl protons) | -CH3 | 0.90 | 130.2 ± 11.3 | 125.8 ± 14.5 |
| B (methylene protons) | -(CH2)n- | 1.30 | 935.0 ± 59.2 | 956.4 ± 73.1 |
| C (methylene protons β to COO) | -CH2-CH2-COO | 1.59 | 104.5 ± 12.3 | 109.1 ± 15.4 |
| D (methylene protons α to C = C) | -CH2-CH = CH-CH2- | 2.03 | 141.7 ± 10.8 | 146.0 ± 15.2 |
| E (methylene protons α to COO) | -CH2-COO | 2.25 | 100 | 100 |
| F (diallylic methylene protons) | =CH-CH2-CH = | 2.77 | 24.5 ± 3.1 | 23.4 ± 3.9 |
| J (methine protons) | -CH = CH- | 5.31 | 62.4 ± 5.7 | 63.9 ± 6.2 |
The areas are relative to the methylene resonance α to COO (peak E) after correction for partial saturation. Resonance assignments by letter correspond to Fig. 1. Values are the mean ± 1 SD (n = 20).