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This site, from the National Institute of Materials and Chemical Research in Japan, contains full spectra and, in many cases, peak assignments for 34,600 compounds, including about 25,000 mass spectra, 14,200 13C NMR, 15,900 proton NMR, 54,100 IR, 3,500 Raman and 2,000 ESR spectra. The database is searchable by compound name, CAS Registry Number, molecular formula and NMR, IR or MS peaks. The database is free to the public, but users are asked to download no more than 50 spectra per day without specific permission of the site owners.

Materials Indexed: Datasets, Technical Data Database Type: Data Collection Interface Language: English Materials Language: English Subject: Chemistry Broad Category: Reference, Sciences