Online chemistry resources have expanded dramatically in the past few years with resources such as PubChem, ChEBI, Wikipedia, ChemSpider and many others offering rich resources to scientists seeking data and information. ChemSpider has become one of the primary chemistry portals delivering a heterogeneous mix of Open and Closed data. ChemSpider offers a structure-centric community for collaboration enabling the crowd-sourced deposition and validation of online chemistry data. ChemSpider has also been integrated into the ChemMantis system – CHEMistry Markup And Nomenclature Transformation Integrated System. This platform facilitates entity extraction of science related terms using both heuristics and highly curated dictionaries. The resulting documents are marked up to allow viewing of chemical structures linked out to over 200 different data sources via the ChemSpider database.