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. 2020 Nov 18;15:121. doi: 10.1186/s13020-020-00401-2

Table 1.

The parameters of “Drug-Like Soft” rule

Property Range Property Range
MW 100–600 Rings  ≤ 6
logP − 3 to 6 Max size system ring  ≤ 18
HBA  ≤ 12 Carbons 3–35
HBD  ≤ 7 Hetero atoms 1–15
tPSA  ≤ 180 H/C ratio 0.1–1
Rotatable bonds  ≤ 11 Charges  ≤ 4
Rigid bonds  ≤ 30 Total charge − 4 to 4