=-:  PubChem Substance SDF Formatted Data Directory  :-=


This directory contains compressed SDF formatted data
of PubChem Substance information.

Each file contains the records for a range of Substance ID (SID)
values.  The SID range is provided in the filename.  For example,
the file "Substance_00000001_00010000.sdf.gz" contains the PubChem
Substance records with SIDs in the range of 1 through 10,000.

A description of the SDF data tags is provided in the file
"pubchem_sdtags.txt" or "pubchem_sdtags.pdf" in the PubChem
top-level "specifications" directory.


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NCBI is not in a position to assess the validity of such claims and, therefore,
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