The following page contains validation results for some of ChemAxon's calculator plugins:
 
Fig. 1 Predicted vs. experimental results of the pKa calculation
 
Fig. 2 Distribution of the pKa estimation error
{info} A study comparing various p K a calculation results versus the measured p K a values of compounds was published by John Manchester et al. Read the article here.
 
Fig. 3 Predicted vs. experimental results of the log P calculation
 
Fig. 4 Distribution of the log P estimation error
 
Fig. 5 Predictied vs. experimental results of the polarizability prediction
 
Table 1. Experimental vs predicted values
 
Fig. 6 Predicted vs. experimental 3D molecular polarizability values
 
Table 2. Experimental 3D polarizability values