Improved Knime (2.12.1) workflow for detection of Pan-Assay Interference Compounds (PAINS) using RDKit nodes. PAINS SMARTS curated by Greg Landrum are used for the substructure searches. These yield 753 hits among the WEHI set of 10,000 compounds. A Total Hits count column is added by the RDKit Substructure Counter node, so no additional aggregation is needed. Structures devoid of PAINS are separated out for further progression, while the PAINS hits can be visually inspected using the RDKit I...