• SDBS : The SDBS (Spectral Database for Organic Compounds) is an online library for organic compounds, which offers a maximum of six different types of spectra under a directory of the compounds. The available spectra types include mass spectra (EI-MS), Fourier transform IR spectra (FT-IR), 1H nuclear magnetic resonance (NMR) spectra, 13 C NMR spectra, Raman spectra, and electron spin resonance (ESR) spectra. All the IR spectra were measured at the National Institute of Advanced Industrial Science and Technology (AIST), Japan, using a Nicolet 170SX or a JASCO FT/IR-410. The spectral resolution for the Nicolet 170SX was 0.25 cm -1 , and the spectral data were stored in the database at intervals of 0.5 cm -1 at 4000-2000 cm -1 , and of 0.25 cm -1 at 2000-400 cm -1 . The spectral resolution and the interval were 0.5 cm -1 for the JASCO FT/IR-410. The SDBS library provides spectra images only.