one can calculate either
mg/ml | mol/l | logS
So when using logS, from which result is it taken? of mg/ml or mol/l?
Or to ask in different way: I have experimental solubility data in micromolar. How do I compare that to the calculated Chemaxon solubility?
logS is a unit of expressing solubility in itself, which is the 10-based logarithm of the solubility measured in mol/l. So you can calculate the solubility in three units: logS, mol/l, and mg/ml.
To calculate our data in micromolar simply calculate the solubility in mol/l, and then multiply it by 10^6.
We have updated our documentation page with the definition of the logS unit.