The most common used tool to optimize a lead compound is to use a SAR
table. MDL offers two tools. SAR Table can be activated being from ISIS/Base
and is part of ISIS/Base. More possibilities are offered in ISIS
for EXCEL. Tools like miner3D help you
to analyze your data visually.
Databases with bioactivities can
help you finding ideas through analogs.
Purchasing or syntheses of compounds or whole libraries
can provide test samples.