Bioactivity and Target Analysis
For example, say you are interested in aspirin for a particular target. It allows you to find/navigate to similar compounds tested against that target or to find similar targets tested against aspirin.
To find a Dyad page, click on the activity in the bioassay result summary from any PubChem compound page .. for example:
https://pubchem.ncbi.nlm.nih.gov/compound/Aspirin#section=BioAssay-Results
It will take you to an AID/SID dyad .. for example:
https://pubchem.ncbi.nlm.nih.gov/bioassay/743347#sid=174007205
If you are keen on targets, go to a Target page .. for example:
https://pubchem.ncbi.nlm.nih.gov/target/gene/BLM
There is a tested compounds section:
https://pubchem.ncbi.nlm.nih.gov/target/gene/BLM#section=Tested-Compounds
Click on the activity to go to a target/CID dyad page .. for example:
https://pubchem.ncbi.nlm.nih.gov/target/gene/BLM#cid=49853190
There is a similar compounds section, which shows compounds similar but that are also tested against the target in any bioassay:
https://pubchem.ncbi.nlm.nih.gov/target/gene/BLM#cid=49853190§ion=Similar-Compounds
One can take these compounds and put them into an open source package like RDKit and do a matched molecular pair analysis (MMPA):
https://en.wikipedia.org/wiki/Matched_molecular_pair_analysis
https://github.com/rdkit/mmpdb
You can also find related targets for which the CID has bioactivity:
https://pubchem.ncbi.nlm.nih.gov/target/gene/BLM#cid=49853190§ion=Other-Genes