ChemSpider is a free chemical structure database providing fast text and structure search access to over 30 million structures from hundreds of data sources. Watch our introduction video. Search by chemical names Systematic namesSynonymsTrade namesDatabase identifiers Search by chemical structure
chemicalize.org Webpage Viewer lets you see any web page with chemical structures highlighted in the original page. Recognized formats are IUPAC names, common names, InChI and SMILES identifiers. A chemical table of contents is organized at the top of the page with the 2D structure image of all recognized chemical structures. To get started type or paste the URL of a web page, or pick an example from below.