| AcOH | Acetic acid |
| GhrR | Ghrelin receptor |
| BOP | Benzotriazole-1-yl-oxy-tris-(dimethylamino)-phosphonium hexafluorophosphate |
| BBB | Blood-brain barrier |
| Boc | tert-Butyloxycarbonyl |
| CHI IAM | Chromatographic hydrophobicity index on immobilized artificial membranes |
| DCM | Dichloromethane |
| DMF | N,N-Dimethylformamide |
| EA | Ethyl acetate |
| HPES | 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid |
| HPLC | High-performance liquid chromatography |
| HRMS | High resolution mass spectrometry |
| IC50 | The half maximal inhibitory concentration |
| IH | Petroleum ether (40–65 °C) |
| M | Molarity |
| MW | Molecular weight |
| PET | Positron emission tomography |
| SPECT | Single-photon emission computed tomography |
| TBAF | Tetrabutylammonium fluoride |
| Et3N | Triethylamine |
| TFA | Trifluoroacetic acid |