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. 2005 Feb 3;26(5):484–490. doi: 10.1002/jcc.20186

Table 1.

Drug‐Like Filter Rules.

Parameters Drug‐like values
Number of H‐bond donors (HDN) 0–5
Number of H‐bond acceptors (HAN) 0–8
Number of aromatic bonds (AB) 0–28
Number of smallest set of smallest rings (SSSRS) 1–9
Average atomic numbers (AZ) 6–10
Number of rotating bonds (RB) 0–14
Average electronegativity (AE) 2.55–3.02
Molecular weight (MW) ≤900
Octanol–water partition coefficient (LogP) 0–5