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ChemSpider is an online chemical structure database and search platform operated by the Royal Society of Chemistry. It lets users search for molecules by structure or text and view identifiers, synonyms, SMILES, and InChI, with simple and advanced search options and filters for single- or multi-component structures. The site aggregates data from multiple sources and provides resources such as help pages, webinars, blogs, and information about data sources and privacy.
AI named ChemSpider from December 2025 to January 2026.