Affinity Data Type
pChEMBL filter i: pChEMBL is a standardized activity value used in the ChEMBL database. It is calculated as the negative base-10 logarithm of the molar concentration of an activity endpoint (IC50, EC50, Kd, Ki, etc.):

pChEMBL = -log10 (activity in M) -
Drag the two handles on one gradient bar to set a pChEMBL interval.