| Label | Id | |
|---|---|---|
| MC-LE | 222416 | |
| MC-WV | 222443 | |
| MG(0:0/20:3(11Z,14Z,17Z)/0:0) | 168524 | |
| MIPC(d18:0/16:0) | 186248 | |
| MKN-003A | 224477 | |
| MLI-2 | 132484 | |
| MPC1001 | 222499 | |
| Maclurin | 6624 | |
| Maggiemycin | 205824 | |
| Magnesidin | 224052 | |
| Malbrancheamide | 204248 | |
| Malvidin-3-O-(6-p-coumaroyl)glucoside | 192433 | |
| Megastigma-4,6(E),8(Z)-triene | 202408 | |
| Melledonal | 224378 | |
| Mer-f3 | 224909 |