LogS

Overview

LogS module simulates the full solubility-pH profile. Prediction results are presented in two ways – an easy to navigate and interpret graph and a list of LogS predictions at discrete pH values. Initially this list is populated by the solubility predictions at physiologically relevant pH conditions; however it is fully customizable via the ability to add or remove the predictions at any pH value.

Features

• Estimates the solubility-pH profile and calculates LogS values at various physiological pHs
• Estimates the qualitative solubility in buffer at pH=7.4 for drug-like compounds using data sets ranging from >7,500 to >8,100 compounds

Interface

File:logs.png

1. Quantitative solubility (logS, mmol/L) estimated at various physiologically important pH values.
   File:logs phpoint.png
   
   a. Select different measures.
   b. Click "+/-" nodes to expand/collapse the option of new pH point's addition.
   c. Enter desirable pH value and press "Add". The new pH point along with automatically calculated logS value will appear at the end of the list.
   d. Hover over the pH point and press the "x" pictogram to remove it from the list.
2. Press "Configure" button to switch model training on or off, and to select the database file to use for training.
3. Graphical plot of solubility-pH dependence
4. Click and drag the slider to see calculated logS at precise pH value displayed on the right.