I grabbed all the drug label data from DailyMed and now I'm interested in finding information in other databases related to each label. For instance, for the tamoxifen label I'd like to find the PubChem compound ID and the DrugBank ID so that I can link to those pages for more information.
Has anyone else done this? How does one identify records in other databases that are equivalent to an FDA drug label?
I'm having a hard time finding an identifier in the label that is recognized in any other major datasource (UMLS, PubChem, DrugBank, etc...). I was able to pull out the "FDA SRS" identifiers and "NDC" identifiers but those don't seemed to be used anywhere else.