'What is the difference between flat and stereo STITCH compound ids? (SIDER dataset)
For my thesis, I'm working on side effect prediction in a machine learning framework and I am working on data available on SIDER (http://sideeffects.embl.de/download/). If you open the README file, the first description you'll see is:
meddra_all_se.tsv.gz
1 & 2: STITCH compound ids (flat/stereo, see above)
3: UMLS concept id as it was found on the label
4: MedDRA concept type (LLT = lowest level term, PT = preferred term; in a few cases the term is >neither LLT nor PT)
5: UMLS concept id for MedDRA term
6: side effect name
I can not really understand what is the difference between flat and stereo compound ID; is it a chemical descriptor? Is it a notation issue?
Moreover, I thought that the two IDS for the same compound could yield to similar results on PubChem but they don't. For example, in the dataset the STITCH ids for the first compound are CID100000085 and CID000010917; on PubChem the first is an aromatic compound and the second is not, they are widely different.
Thanks to everyone who will take the time to help me.
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