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| δ (ppm) | assignment | δ (ppm) | assignment |
|---|---|---|---|
| 165.4 | 4(IPA) | 130.0 | 5(IPA) |
| 165.1 | 9(MA) | 129.9 | 12(MA) |
| 164.7 | 11(FA) | 128.8 | 8(IPA) |
| 134.4 | 7′(IPA-COOH) | 70.2–69.9 | 1(IPA/MA/FA-NPG) |
| 133.9 | 7(IPA) | 68.3 | 1′(IPA-NPG-OH) |
| 133.6 | 10(FA) | 68.2 | 1′(FA/MA-NPG-OH) |
| 131.3 | 6′(IPA-COOH) | 35.5–34.9 | 2(NPG, splitting analogous to 1H NMR) |
| 130.6 | 5′(IPA-COOH) | 22.1–21.6 | 3(NPG, splitting) |
