This module builds bioprofiles for chemicals and provides descriptors using PubChem bioactivity data, after filling experimental gaps. You can upload up to 500 chemicals (by PubChem CID). Assays with at least one active compound are selected; mutual information identifies 35 informative assays; then Random Forest models (trained on up to 500 actives and 500 inactives per informative assay) impute missing values.