Spectral Database for Organic Compounds, SDBS

URL: 
http://sdbs.riodb.aist.go.jp/sdbs/cgi-bin/cre_index.cgi?lang=eng
Description: 

A source for 1H NMR, 13C NMR, IR and mass spectra of thousands of compounds

Organic topics: 
Infrared spectroscopy
Mass spectrometry
NMR spectroscopy
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