The online version of Organic Syntheses (QD262 .O7). Because Organic Syntheses has been published with grant funds and is a cooperative venture among chemists and other scientists, its full text is available online free of charge. In addition, updated material not yet available in print appears on the site.
This NIST site contains thermochemical data for over 7000 organic and small inorganic compounds, reaction thermochemistry data for over 8000 reactions, IR spectra for over 16,000 compounds, mass spectra for over 15,000 compounds, and much more.
Hundreds of thousands of free spectra available, NMR, IR, Raman, UV-Vis, and mass spectra by chemical name, synonym, CAS Registry Number, or InChIKey. Users can zoom in on the spectra and upload and overlay their own spectrum for comparison.