| CID | collision-induced dissociation |
| EtOH | ethanol |
| ESI | electrospray ionization |
| MS | mass spectroscopy |
| MeCN | acetonitrile |
| MeOH | methanol |
| LC-MS/MS | liquid chromatography tandem mass spectroscopy |
| Q | quadrupole (configuration of a single linear accelerator in MS/MS) |
| SRM | selective reaction monitor (or single ion monitoring, multiple ion monitoring) |
| SCFAs | short-chain fatty acids |
| 4PyBA | 4-(pyrrolidin-1-ylmethyl) benzylamine |
| MALDI | matrix-assisted laser desorption/ionization |