| Label | Id | |
|---|---|---|
| Ianthelline | 195168 | |
| Ibudilast | 31684 | |
| Iguratimod | 31689 | |
| Ins-1-P-Cer(t18:0/2,3-OH-26:0)(1-) | 65168 | |
| Ipomeamaronol | 168579 | |
| Isodeoxyelephantopin | 181685 | |
| Isomargaritene | 176168 | |
| Isopetasoside | 168841 | |
| Isorheagenine | 168501 | |
| Isosakuranin | 168532 | |
| Isosyringinoside | 168779 | |
| Jebetaenipeptin | 221686 | |
| Kinetin-7-N-glucoside | 168567 | |
| Kiwiionoside | 168221 | |
| Koenigine | 168437 |