Table 2 The top 10 most used R groups from approved drugs
From: IntelliPatent: a web-based intelligent system for fast chemical patent claim drafting
R group | SMILES | Occurrence (%) | Both top 10 |
|---|---|---|---|
Methyl | *C | 23.6 | O |
Hydroxy | *O | 18.2 | O |
Chloro | *Cl | 6.4 | O |
Amino | *N | 5.1 | Â |
Methoxy | *OC | 5.0 | O |
Carboxy | *C(=O)O | 3.9 | O |
Fluoro | *F | 2.9 | O |
Ethyl | *CC | 2.2 | Â |
Hydroxymethyl | *CO | 1.7 | Â |
Trifulromethyl | *C(F)(F)F | 1.0 | O |