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1H NMR data for 2-(1-carboxy methylidene)-2,3-dihydrobenzo[b]furanylidene glycolic acid (metabolite VI) recorded at 300 MHz
| Proton assignment | δ (ppm) | 3J (Hz) | 4J (Hz) |
|---|---|---|---|
| H4, dd | 8.03 | 7.3 (4, 5) | 1.7 (4, 6) |
| H5, m | 7.48 | 7.4 (5, 6) | 1.3 (5, 7) |
| H6, m | 7.53 | 7.8 (6, 7) | |
| H7, dd | 7.71 | ||
| H2′, s | 7.59 |
