| 5-HT4R | Receptor 5-HT4 |
| AD | Alzheimer’s disease |
| S | Steric |
| E | Electrostatic |
| H | Hydrophobic |
| HBA | Hydrogen bond acceptor |
| HBD | Hydrogen bond donor |
| ADMET | Absorption, distribution, metabolism, excretion, and toxicity |
| FFQSAR | Force-field based QSAR |
| GFQSAR | Gaussian-field based QSAR |
| CCC | Correlation coefficient of concordance |
| 3D-QSAR | Three-dimensional quantitative structure–activity relationship |